APA ציטוט

Ruiz, A. (1959). Notes on Costa Rican Opalinids. I. Opalina moreletei Metcalf.

Citación estilo Chicago

Ruiz, Armando. Notes On Costa Rican Opalinids. I. Opalina Moreletei Metcalf. 1959.

ציטוט MLA

Ruiz, Armando. Notes On Costa Rican Opalinids. I. Opalina Moreletei Metcalf. 1959.