APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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

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