APA (7th ed.) Citation

Caywood, L. R., & Butler, L. R. (1954). Excavations at two Fort Okanogan sites, 1952. National Park Service.

Chicago Style (17th ed.) Citation

Caywood, Louis R., and Leonard R. Butler. Excavations at Two Fort Okanogan Sites, 1952. San Francisco: National Park Service, 1954.

MLA (8th ed.) Citation

Caywood, Louis R., and Leonard R. Butler. Excavations at Two Fort Okanogan Sites, 1952. National Park Service, 1954.

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