Cita APA (7a ed.)

Fischer, W. K. (1952). The Sipunculid Worms of California and Baja California. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Fischer, Walter Kenrick. The Sipunculid Worms of California and Baja California. Washington: Smithsonian Institution, 1952.

Cita MLA (8a ed.)

Fischer, Walter Kenrick. The Sipunculid Worms of California and Baja California. Smithsonian Institution, 1952.