AMA uses superscript to indicate in-text citations. Numbers go directly into the text, or on tables or figures where something needs to be cited. See the example below:
Finding treatments for breast cancer is a major goal for scientists.1 |
Other scientists have investigated individual drugs within this class, including Andre and Zielinski2 and Joensuu and Gligorov.4 |
The first source you cite will be number one on your reference list. Number your references in consecutive order, as they appear in the text of your paper.
The superscript should go directly after the fact, figure, concept or quote you are citing. If you have more than one citation being referenced at the same time in your paper, separate them. See the examples below:
Several drugs have been developed to treat Alzheimer's,3-7 but nothing is available on the market today.3,4 |
In the example above, references 3 through 7 are all cited and are listed with a dash. Only 3 and 4 are cited for the second half of the sentence, and are separated with a comma. The superscript goes outside of periods and commas and inside colons and semicolons.
Several prior studies have noted the lack of information.1,4-7,19,24 Some mention issues with funding8; others blame problems with trials.9 |
In the above example, 1 is cited, 2 and 3 are not, and 4, 5, 6 and 7 are (so they get a dash). The other references are separated by a comma.
If you use a reference multiple times, use the same superscript number each time you cite it.