Cita APA (7a ed.)

Mohlenbrock, R. H. (1999). Ferns (2nd ed.). Southern Illinois University Press.

Cita Chicago Style (17a ed.)

Mohlenbrock, Robert H. Ferns. 2nd ed. Carbondale: Southern Illinois University Press, 1999.

Cita MLA (8a ed.)

Mohlenbrock, Robert H. Ferns. 2nd ed. Southern Illinois University Press, 1999.