APA (7th ed.) Citation

Matthews, G., & Bernard, A. (1997). Undercover pesticide. New Scientist, 156, 49.

Chicago Style (17th ed.) Citation

Matthews, Graham, and Adam Bernard. "Undercover Pesticide." New Scientist 156 (1997): 49.

MLA (9th ed.) Citation

Matthews, Graham, and Adam Bernard. "Undercover Pesticide." New Scientist, vol. 156, 1997, p. 49.