APA (7th ed.) Citation

Christ, H. (1911). On Psomiocarpa, a neglected genus of ferns: With one plate. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Christ, H. On Psomiocarpa, a Neglected Genus of Ferns: With One Plate. Washington: Smithsonian Institution, 1911.

MLA (9th ed.) Citation

Christ, H. On Psomiocarpa, a Neglected Genus of Ferns: With One Plate. Smithsonian Institution, 1911.

Warning: These citations may not always be 100% accurate.