Cita APA (7th ed.)

Bradbury, R. (1990). Zen in the art of writing. Bantam.

Cita Chicago (17th ed.)

Bradbury, Ray. Zen in the Art of Writing. New York: Bantam, 1990.

Cita MLA (9th ed.)

Bradbury, Ray. Zen in the Art of Writing. Bantam, 1990.