Cita APA (7a ed.)

Hill, D. A. (1990). Visual impact: : creative language learning through pictures. Longman.

Cita Chicago Style (17a ed.)

Hill, David A. Visual Impact: : Creative Language Learning Through Pictures. Harlow: Longman, 1990.

Cita MLA (9a ed.)

Hill, David A. Visual Impact: : Creative Language Learning Through Pictures. Longman, 1990.