Cita APA (7a ed.)

Abbs, B., Cook, V., & Underwood, M. (1979). Realistic english dialogues 3 (new edition.). The University.

Cita Chicago Style (17a ed.)

Abbs, Brian, Vivian Cook, y Mary Underwood. Realistic English Dialogues 3. new edition. Oxford: The University, 1979.

Cita MLA (8a ed.)

Abbs, Brian, et al. Realistic English Dialogues 3. new edition. The University, 1979.