The numbers in text are in superscript1 and occur at the end of the clause in which you used the information. They occur outside “quotation marks,”2 commas,3 (parentheses)4 and full stops.5 However, they occur inside semicolons6; and colons7:
Do not leave a space between the last letter or punctuation mark and the number.
Re-use numbers for the same citation
Citations should be numbered sequentially – that is, the first source you cite is 1, the second source is 2 and so on.
However, once you have given a source a number, it will keep that number throughout your paper. So, if you use your first source again, no matter how often you use it, it is still 1.
Citing more than one work at a time
Use commas to show that more than one work is being cited, and use hyphens for several works that would be numbered sequentially:
These side effects can have implications for the patient's mental health, as numerous studies have shown.1,3,6-9
Relationship between in-text citations and reference list
Your reference list follows the order of the numbers used in the text. The first source you cite in the text is 1 and the reader will look for number 1 in the reference list to find the full citation; the fifth source you use is 5 and the full citation is listed at number 5 in the reference list (and so on).
Using author's names in-text:
If including an author in the text of a sentence, use the surnames of authors and add the citation number after the author’s surname.
Reference lists are in numerical order, based on the order in which the sources were first cited in your assignment.
The AMA style guide does not give specific instructions for the layout of the reference list, but the following advice is based on the formatting of reference lists in both the style guide and the journals published by the JAMA family.
Do not begin the reference list on a new page, but place it at the end of your document, after a space or a line. It follows any article information or acknowledgments. Put the word "References" in all caps, and in line with the left-hand margin. Format the numbers as per normal numbering style within Word (or similar programmes).
Sample Reference List:
We acknowledge the Australian Aboriginal and Torres Strait Islander peoples as the first inhabitants of the nation and acknowledge Traditional Owners of the lands where our staff and students, live, learn and work.