APA (7th ed.) Citation

Ahearn, C., & Kœhler, R. (1992). Philippine brittlestars (Echinodermata: Ophiuroidea) described by R. Koehler (1922): A corrected and annotated list of type specimens. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Ahearn, Cynthia, and R. Kœhler. Philippine Brittlestars (Echinodermata: Ophiuroidea) Described by R. Koehler (1922): A Corrected and Annotated List of Type Specimens. Washington, D.C.: Smithsonian Institution Press, 1992.

MLA (9th ed.) Citation

Ahearn, Cynthia, and R. Kœhler. Philippine Brittlestars (Echinodermata: Ophiuroidea) Described by R. Koehler (1922): A Corrected and Annotated List of Type Specimens. Smithsonian Institution Press, 1992.