Cita APA (7a ed.)

Perrett, J., & Reid, J. (1994). Word bird and the Whirlies.

Cita Chicago Style (17a ed.)

Perrett, Jeanne, y Jeffrey Reid. Word Bird and the Whirlies. Hertfordshire, 1994.

Cita MLA (9a ed.)

Perrett, Jeanne, y Jeffrey Reid. Word Bird and the Whirlies. 1994.