Citazione Stile APA (7a Edizione)

Wendy Wax. (2007). Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight.

Citazione stile Chigago Style (17a edizione)

Wendy Wax. Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight, 2007.

Citatione MLA (9a ed.)

Wendy Wax. Piggley Makes a Friend (Ready-to-Read. Level 1). Simon Spotlight, 2007.