Cita APA (7a ed.)

Hill, D. A. (1991). Visual impact: Creative language learning through pictures. Longman.

Cita Chicago Style (17a ed.)

Hill, David A. Visual Impact: Creative Language Learning Through Pictures. Essex, England: Longman, 1991.

Cita MLA (8a ed.)

Hill, David A. Visual Impact: Creative Language Learning Through Pictures. Longman, 1991.