APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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