Cita APA

Grant-Bear, C., & King-Smith, D. (2008). The sheep-pig: Level 2. Harlow: Pearson Education.

Citación estilo Chicago

Grant-Bear, Chris., y Dick King-Smith. The Sheep-pig: Level 2. Harlow: Pearson Education, 2008.

Cita MLA

Grant-Bear, Chris., y Dick King-Smith. The Sheep-pig: Level 2. Harlow: Pearson Education, 2008.