Cita APA

Young, B. E. Y., & Zook, J. R. (2016). Observation frequency and seasonality of marine birds off the Pacific coast of Costa Rica. Universidad de Costa Rica.

Citación estilo Chicago

Young, Bruce E. Young, y James R. Zook. Observation Frequency and Seasonality of Marine Birds Off the Pacific Coast of Costa Rica. Universidad de Costa Rica, 2016.

Cita MLA

Young, Bruce E. Young, y James R. Zook. Observation Frequency and Seasonality of Marine Birds Off the Pacific Coast of Costa Rica. Universidad de Costa Rica, 2016.