APA (7th ed.) Citation

Ellis, M. M. (1919). The branchiobdellid worms in the collections of the United States National museum, with descriptions of new genera and new species. [Government Printing Office].

Chicago Style (17th ed.) Citation

Ellis, Max Mapes. The Branchiobdellid Worms in the Collections of the United States National Museum, with Descriptions of New Genera and New Species. [Washington, D.C.]: [Government Printing Office], 1919.

MLA (9th ed.) Citation

Ellis, Max Mapes. The Branchiobdellid Worms in the Collections of the United States National Museum, with Descriptions of New Genera and New Species. [Government Printing Office], 1919.