Have you been asked to use AMA referencing in a document? Do you need to cite more than one source at once? The American Medical Association\u2019s referencing system has special rules when it comes to citing multiple sources, which we will explain in this post.\r\nIn-Text Citations in AMA Referencing\r\nWhen you use AMA referencing, you give numbered superscript citations in the text and a numbered reference list at the end of your document.\r\nSources are numbered in the order they are first cited, so the first source you cite will be given the number \u20181\u2019, the second \u20182\u2019, and so on:\r\nSleep disorders affect around 40% of adults worldwide.1 The most common of these disorders is insomnia, which is a well known but widely misunderstood issue.2\r\nIn the reference list, you give full details for each source. And if you cite a source more than once, you use the same number each time.\r\nBut what if you need to cite multiple sources in the same place?\r\nCiting Consecutive Sources in AMA Referencing\r\nTo cite consecutive sources from the reference list (i.e. sources that are listed one after the other without interruption), AMA referencing requires that you use a hyphen between the first and last numbers. For example, if we want to cite sources 2, 3, 4 and 5, our in-text citation will look like this:\r\nThe knock-on effects of sleep apnoea are severe.2-5\r\nThe reader will then know we're citing all these sources.\r\nCiting Non-Consecutive Sources in AMA Referencing\r\nTo cite non-consecutive sources \u2013 sources that are not grouped together in the reference list \u2013 you place an unspaced comma between each source number. For example, we would cite sources 3, 8 and 12 like this:\r\nTreatment for sleep disorders often includes exercise.3,8,12\r\nIf you are citing a mixture of consecutive and non-consecutive sources, moreover, you should use a mix of hyphens and commas as appropriate:\r\nStudies demonstrate the effectiveness of music as a sleep aid.1,3-5\r\nHere, we have cited sources 1, 3, 4 and 5.\r\nCiting Non-Consecutive Pages in a Source\r\nWhen you quote directly from a source in AMA referencing, you add page numbers in brackets to the superscript citation. If you are citing more than one source but only quoting from one, moreover, make sure to put the page numbers in brackets immediately after the source you are quoting:\r\nPoor sleep results from \u2018unhealthy lifestyle choices\u2019. 2,4(p17),9\r\nYou can also provide page numbers without quoting to direct the reader to part of a source. To cite a range of consecutive pages in a book, you simply use a hyphen between the first and last pages cited:\r\nDouglas conducted several experiments.10(pp23-26)\r\nHowever, if you need to cite different parts of a single source, you should use commas between the page numbers:\r\nSmith expresses doubt on several counts.15(pp4,18,21)\r\nIn this case, we're citing pages 4, 18 and 21 from source 15 in the reference list. And as with non-consecutive citations, the commas here are unspaced.\r\nHopefully, this post has helped to clarify how to cite multiple sources in AMA referencing. But if you\u2019d like help to check you have referenced correctly, our expert AMA editors are available 24\/7!