Cita APA (7a ed.)

Nutting, C. C. (1900). America hydroids. Gov. Print. off..

Cita Chicago Style (17a ed.)

Nutting, Charles Cleveland. America Hydroids. Washington: Gov. Print. off., 1900.

Cita MLA (9a ed.)

Nutting, Charles Cleveland. America Hydroids. Gov. Print. off., 1900.