Cita APA (7a ed.)

Fraedrich, W., & Wefer, G. (2008). Meere. Friedrich.

Cita Chicago Style (17a ed.)

Fraedrich, Wolfgang, y Gerold Wefer. Meere. Seelze-Velber: Friedrich, 2008.

Cita MLA (9a ed.)

Fraedrich, Wolfgang, y Gerold Wefer. Meere. Friedrich, 2008.