APA (7th ed.) Citation

Codner, A. C. (1985). How Dense! Science Teacher, 52(7), 44.

Chicago Style (17th ed.) Citation

Codner, A. C. "How Dense!" Science Teacher 52, no. 7 (1985): 44.

MLA (9th ed.) Citation

Codner, A. C. "How Dense!" Science Teacher, vol. 52, no. 7, 1985, p. 44.