Cita APA (7a ed.)
American Fern Society & American Fern Society. American fern journal. American Fern Society.
Cita Chicago Style (17a ed.)
American Fern Society y American Fern Society. American Fern Journal. [Washington, etc.]: American Fern Society.
Cita MLA (9a ed.)
American Fern Society y American Fern Society. American Fern Journal. American Fern Society.
Precaución: Estas citas no son 100% exactas.