Cita APA (7a ed.)

Berwick G. Gwen & Thorne S. Sydney. (2003). Timesaver Picture Prompts: Elementary-Intermediate. London, Scholastic, 2003.

Cita Chicago Style (17a ed.)

Berwick G. Gwen y Thorne S. Sydney. Timesaver Picture Prompts: Elementary-Intermediate. London, Scholastic, 2003, 2003.

Cita MLA (9a ed.)

Berwick G. Gwen y Thorne S. Sydney. Timesaver Picture Prompts: Elementary-Intermediate. London, Scholastic, 2003, 2003.