APA (7th ed.) Citation

Timberlake, P. H. (1969). A contribution to the systematics of North America species of Synhalonia (Hymenoptera, Apoidea). Univ. of California Press.

Chicago Style (17th ed.) Citation

Timberlake, Philip H. A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). Berkeley [u.a.]: Univ. of California Press, 1969.

MLA (9th ed.) Citation

Timberlake, Philip H. A Contribution to the Systematics of North America Species of Synhalonia (Hymenoptera, Apoidea). Univ. of California Press, 1969.