APA (7th ed.) Citation

Dowell, P. (1908). New Ferns described as hybrids in the genus Dryopteris ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Dowell, Philip. New Ferns Described as Hybrids in the Genus Dryopteris. [Sonderdr.]. 1908.

MLA (9th ed.) Citation

Dowell, Philip. New Ferns Described as Hybrids in the Genus Dryopteris. [Sonderdr.]. 1908.

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