Cita APA (7th ed.)
Walker, M. (1990). Addison-Wesley kids 1: Activity book. Addison-Wesley.
Cita Chicago (17th ed.)
Walker, Michael. Addison-Wesley Kids 1: Activity Book. Massachusetts: Addison-Wesley, 1990.
Cita MLA (9th ed.)
Walker, Michael. Addison-Wesley Kids 1: Activity Book. Addison-Wesley, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.