APA (7th ed.) Citation

De Keyzer, R. (1989). The cold light of the firefly. Australian Natural History, 23(1), 50.

Chicago Style (17th ed.) Citation

De Keyzer, Roger. "The Cold Light of the Firefly." Australian Natural History 23, no. 1 (1989): 50.

MLA (9th ed.) Citation

De Keyzer, Roger. "The Cold Light of the Firefly." Australian Natural History, vol. 23, no. 1, 1989, p. 50.