Cita APA

Willis, S., & Cortés, J. (2001). Mollusks of Manuel Antonio National Park, Pacific Costa Rica.

Chicago Style Citation

Willis, Samuel, i Jorge Cortés. Mollusks of Manuel Antonio National Park, Pacific Costa Rica. 2001.

Cita MLA

Willis, Samuel, i Jorge Cortés. Mollusks of Manuel Antonio National Park, Pacific Costa Rica. 2001.

Atenció: Aquestes cites poden no estar 100% correctes.