Cita APA

Pilsbry, H. A., & Pilsbry, H. A. (1907). The Barnacles (cirripedia) contained in the collections of the U. S. National Museum. Washington: Govt. Print. Off..

Citación estilo Chicago

Pilsbry, Henry A., y Henry A. Pilsbry. The Barnacles (cirripedia) Contained in the Collections of the U. S. National Museum. Washington: Govt. Print. Off., 1907.

Cita MLA

Pilsbry, Henry A., y Henry A. Pilsbry. The Barnacles (cirripedia) Contained in the Collections of the U. S. National Museum. Washington: Govt. Print. Off., 1907.