Cita APA (7a ed.)

Van Leeuwen, J., & Schweninger, A. (1990). Oliver Pig at school. Dial Books for Young Readers.

Cita Chicago Style (17a ed.)

Van Leeuwen, Jean, y Ann Schweninger. Oliver Pig at School. New York: Dial Books for Young Readers, 1990.

Cita MLA (8a ed.)

Van Leeuwen, Jean, y Ann Schweninger. Oliver Pig at School. Dial Books for Young Readers, 1990.

Precaución: Estas citas no son 100% exactas.