Cita APA (7a ed.)

Wood, D., & Wood, A. (1996). Piggies. Harcourt.

Cita Chicago Style (17a ed.)

Wood, Don, y Audrey Wood. Piggies. San Diego, CA: Harcourt, 1996.

Cita MLA (8a ed.)

Wood, Don, y Audrey Wood. Piggies. Harcourt, 1996.