APA (7th ed.) Citation

Douglass, R. C. (1967). Permian Tethyan fusulinids from California. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Douglass, Raymond C. Permian Tethyan Fusulinids from California. Washington: U.S. Govt. Print. Off, 1967.

MLA (9th ed.) Citation

Douglass, Raymond C. Permian Tethyan Fusulinids from California. U.S. Govt. Print. Off, 1967.

Warning: These citations may not always be 100% accurate.