Cita APA (7th ed.)

Heyer, S. (1994). Easy true stories: A picture-based beginning reader. Longman.

Cita Chicago (17th ed.)

Heyer, Sandra. Easy True Stories: A Picture-based Beginning Reader. Nueva York: Longman, 1994.

Cita MLA (9th ed.)

Heyer, Sandra. Easy True Stories: A Picture-based Beginning Reader. Longman, 1994.