Citazione Stile APA (7a Edizione)

Thorp, R. W. (1983). Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). University of California Press.

Citazione stile Chigago Style (17a edizione)

Thorp, Robbin W. Bumble Bees and Cuckoo Bumble Bees of California (Hymenoptera: Apidae). Berkeley: University of California Press, 1983.

Citatione MLA (9a ed.)

Thorp, Robbin W. Bumble Bees and Cuckoo Bumble Bees of California (Hymenoptera: Apidae). University of California Press, 1983.