APA

Jeff Kinney, . (2009). Gregs Tagebuch. : Baumhaus.

Chicago

Jeff Kinney, . 2009. Gregs Tagebuch. : Baumhaus.

Harvard

Jeff Kinney, . (2009). Gregs Tagebuch. : Baumhaus.

MLA

Jeff Kinney, . Gregs Tagebuch. : Baumhaus. 2009.