AMA Manual of Style
by Superscript numbers
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).
In the medical sciences, you should only use a direct quote if the exact wording is important. You should be paraphrasing the information as much as possible.
However, if you do need to refer to the exact wording used by the authors, you must to put the quote in "quotation marks" and use a page number next to the in-text citation.
You put the page number in brackets directly after the reference number, with no space: 1(p6). This all goes in superscript.
Example
Rey's support of the Mad Dog theory is equivocal, and he states "I’m not defending Mad-doggery because I believe it."3(p125)
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.