Cita APA

Ruiz, A., & Alfaro, M. (1959). Notes on Costa Rican Opalinids. Il. Zelleriella antillensis ( Metcalf) and Z. bufoxena Metcalf.

Chicago Style Citation

Ruiz, Armando, i Mario Alfaro. Notes On Costa Rican Opalinids. Il. Zelleriella Antillensis ( Metcalf) and Z. Bufoxena Metcalf. 1959.

Cita MLA

Ruiz, Armando, i Mario Alfaro. Notes On Costa Rican Opalinids. Il. Zelleriella Antillensis ( Metcalf) and Z. Bufoxena Metcalf. 1959.

Atenció: Aquestes cites poden no estar 100% correctes.