APA (7th ed.) Citation

Varela, M. M., & Ramos-Esplá, A. (2007). Didemnum bentarti (Chordata: Tunicata) a new species from the Bellingshausen Sea, Antarctica. Polar Biology, 31(2), 209.

Chicago Style (17th ed.) Citation

Varela, M. M., and A. Ramos-Esplá. "Didemnum Bentarti (Chordata: Tunicata) a New Species from the Bellingshausen Sea, Antarctica." Polar Biology 31, no. 2 (2007): 209.

MLA (9th ed.) Citation

Varela, M. M., and A. Ramos-Esplá. "Didemnum Bentarti (Chordata: Tunicata) a New Species from the Bellingshausen Sea, Antarctica." Polar Biology, vol. 31, no. 2, 2007, p. 209.