Wood, D. (1996). Piggies. Harcourt.
Cita Chicago (17th ed.)Wood, Don. Piggies. San Diego: Harcourt, 1996.
Cita MLA (8th ed.)Wood, Don. Piggies. Harcourt, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)