Cita APA (7a ed.)

Cei, J. M. A. M. (1963). Some Precipitin Tests and Preliminary Remarks on the Systematic Relationships of Four South American Families of Frogs.

Cita Chicago Style (17a ed.)

Cei, José Miguel Alfredo María. Some Precipitin Tests and Preliminary Remarks on the Systematic Relationships of Four South American Families of Frogs. 1963.

Cita MLA (8a ed.)

Cei, José Miguel Alfredo María. Some Precipitin Tests and Preliminary Remarks on the Systematic Relationships of Four South American Families of Frogs. 1963.