Cita APA

Pohl, R. W. (1972). Keys to the genera of grasses of Costa Rica.

Chicago Style Citation

Pohl, Richard W. Keys to the Genera of Grasses of Costa Rica. 1972.

Cita MLA

Pohl, Richard W. Keys to the Genera of Grasses of Costa Rica. 1972.

Atenció: Aquestes cites poden no estar 100% correctes.