APA
Colwell, R. K., & Naeem, S. (1999). Sexual sorting in hummingbird flower mites (Mesostigmata: Ascidae). Annals of the Entomological Society of America, 92, 952–959.
Chicago/Turabian
Colwell, Robert K, and Shadid Naeem. “Sexual Sorting in Hummingbird Flower Mites (Mesostigmata: Ascidae).” Annals of the Entomological Society of America 92 (1999): 952–959.
MLA
Colwell, Robert K., and Shadid Naeem. “Sexual Sorting in Hummingbird Flower Mites (Mesostigmata: Ascidae).” Annals of the Entomological Society of America, vol. 92, Oxford University Press Oxford, UK, 1999, pp. 952–59.