APA (7th ed.) Citation

Koehler, R., & Clark, A. H. (1922). Ophiurans of the Philippine seas and adjacent waters. Government Printing Office.

Chicago Style (17th ed.) Citation

Koehler, René, and Austin H. Clark. Ophiurans of the Philippine Seas and Adjacent Waters. Washington, D. C: Government Printing Office, 1922.

MLA (9th ed.) Citation

Koehler, René, and Austin H. Clark. Ophiurans of the Philippine Seas and Adjacent Waters. Government Printing Office, 1922.