Cita APA

Stolze, R. G., & Stolze, R. G. (1976). Ferns and ferns allies of Guatemala. Chicago, III.: Field Museum of Natural History.

Citación estilo Chicago

Stolze, Robert G., y Robert G. Stolze. Ferns and Ferns Allies of Guatemala. Chicago, III.: Field Museum of Natural History, 1976.

Cita MLA

Stolze, Robert G., y Robert G. Stolze. Ferns and Ferns Allies of Guatemala. Chicago, III.: Field Museum of Natural History, 1976.