AMA in-text citation guide

AMA in-text citations are superscript Arabic numerals, numbered in the order you first cite each source. They go outside full stops and commas but inside colons and semicolons, e.g. “…improved survival.¹”

AMA Manual of Style, 11th ed.

SituationAMA in-text
One sourcereduced mortality.¹
Several sourcesmortality.¹,³,⁷
A rangemortality.²⁻⁵
A pagemortality.¹⁽ᵖ³⁴⁾
Naming the authorAs Horby et al² reported…
Before a colontwo outcomes³:

Make the AMA reference that goes with it

Paste a DOI, or type the details. The in-text marker appears under the reference.

Source type

Showing a worked example.

Authors
Used by IEEE, AMA, ACS, Vancouver, CSE, Nature
AMA 11AMA Manual of Style, 11th ed.
Journal article

RECOVERY Collaborative Group. Dexamethasone in Hospitalized Patients with Covid-19. N Engl J Med. 2021;384(8):693-704. doi:10.1056/NEJMoa2021436

In-text¹

Questions about AMA in-text citations

Does the AMA superscript go before or after the period?

After. AMA places superscript numbers outside periods and commas, inside colons and semicolons.

How do I cite a page number in AMA in-text?

Put it in parentheses after the superscript number, also superscript: ¹⁽ᵖ³⁴⁾.

Do I use “et al” in AMA running text?

Yes, for three or more authors name the first author and write “et al” (no full stop in AMA).

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