Hurd, P. D., & Linsley, E. G. (1970). A classification of the squash and gourd bees Peponapis and Xenoglossa (Hymenoptera: Apoidea). Univ. of California Press.
Chicago Style (17th ed.) CitationHurd, Paul D., and Earle Garfield Linsley. A Classification of the Squash and Gourd Bees Peponapis and Xenoglossa (Hymenoptera: Apoidea). Berkeley u.a: Univ. of California Press, 1970.
MLA (9th ed.) CitationHurd, Paul D., and Earle Garfield Linsley. A Classification of the Squash and Gourd Bees Peponapis and Xenoglossa (Hymenoptera: Apoidea). Univ. of California Press, 1970.
Warning: These citations may not always be 100% accurate.