APA (7th ed.) Citation

Douglass, R. C. (1971). Pennsylvanian fusulinids from southeastern Alaska. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Douglass, Raymond C. Pennsylvanian Fusulinids from Southeastern Alaska. Washington: U.S. Govt. Print. Off, 1971.

MLA (9th ed.) Citation

Douglass, Raymond C. Pennsylvanian Fusulinids from Southeastern Alaska. U.S. Govt. Print. Off, 1971.

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