Cita APA (7a ed.)

Grillos, S. J. (1966). Ferns and ferns allies of California. University of California Press.

Cita Chicago Style (17a ed.)

Grillos, Steve J. Ferns and Ferns Allies of California. Los Angeles: University of California Press, 1966.

Cita MLA (8a ed.)

Grillos, Steve J. Ferns and Ferns Allies of California. University of California Press, 1966.