Cita APA (7a ed.)

Van Leeuwen, J., & Schweninger, A. (2006). Oliver Pig and the best fort ever. Dial Books for Young Readers.

Cita Chicago Style (17a ed.)

Van Leeuwen, Jean, y Ann Schweninger. Oliver Pig and the Best Fort Ever. New York: Dial Books for Young Readers, 2006.

Cita MLA (8a ed.)

Van Leeuwen, Jean, y Ann Schweninger. Oliver Pig and the Best Fort Ever. Dial Books for Young Readers, 2006.