Here is a citation for a journal article in APA 7th edition.
Curtin, J.A., & Robinson, P.D. (2007). Blue blood. Journal of Paediatrics & Child Health, 43(3), 184-185.
Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article. Title of Periodical, volume number(issue number), pages. https://doi.org/xx.xxx/yyyy
And a book:
American Psychological Association. (2020). Concise guide to APA style: The official APA style guide for students. American Psychological Association.
Author, A. A. (Year of publication). Title of work: Capital letter also for subtitle. Publisher Name.
DOI (if available)
More information
The following is a citation for a journal article in AMA style. You can see more information on citation styles on the citing sources page.
1. Friedman BJ, Waters J, Kwan OL, DeMaria AN. Comparison of magnetic resonance imaging and echocardiography in determination of cardiac dimensions in normal subjects. Journal of the American College of Cardiology. 1985; 5:1369-1376. Available from: Science Direct. Accessed January 15, 2013.