APA (7th ed.) Citation

Sohn, I. G. (1960). Paleozoic species of Bairdia and related genera. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Sohn, I. G. Paleozoic Species of Bairdia and Related Genera. Washington: U.S. Govt. Print. Off, 1960.

MLA (8th ed.) Citation

Sohn, I. G. Paleozoic Species of Bairdia and Related Genera. U.S. Govt. Print. Off, 1960.