APA (7th ed.) Citation

Petrescu, I., & Heard, R. W. (2004). Three new species of Cumacea (Crustacea: Peracarida) from Costa Rica. Magnolia Press.

Chicago Style (17th ed.) Citation

Petrescu, Iorgu, and Richard W. Heard. Three New Species of Cumacea (Crustacea: Peracarida) from Costa Rica. Auckland, N.Z.: Magnolia Press, 2004.

MLA (9th ed.) Citation

Petrescu, Iorgu, and Richard W. Heard. Three New Species of Cumacea (Crustacea: Peracarida) from Costa Rica. Magnolia Press, 2004.