APA (7th ed.) Citation

JS, S. (1981). Acne grading methods. Archives of dermatology, 117(5), 252.

Chicago Style (17th ed.) Citation

JS, Samuelson. "Acne Grading Methods." Archives of Dermatology 117, no. 5 (1981): 252.

MLA (9th ed.) Citation

JS, Samuelson. "Acne Grading Methods." Archives of Dermatology, vol. 117, no. 5, 1981, p. 252.