Cita APA (7th ed.)
Smith, G. M. (1920). Phytoplankton of the Inland Lakes of Wisconsin.
Cita Chicago (17th ed.)
Smith, Gilbert Morgan. Phytoplankton of the Inland Lakes of Wisconsin. Madison, 1920.
Cita MLA (9th ed.)
Smith, Gilbert Morgan. Phytoplankton of the Inland Lakes of Wisconsin. 1920.
Atenció: Aquestes cites poden no estar 100% correctes.