APA (7th ed.) Citation

Lemonick, M. (1989). Back to the future. Discover, 10(1), 42.

Chicago Style (17th ed.) Citation

Lemonick, M. "Back to the Future." Discover 10, no. 1 (1989): 42.

MLA (9th ed.) Citation

Lemonick, M. "Back to the Future." Discover, vol. 10, no. 1, 1989, p. 42.