Cita APA (7a ed.)

Abbs, B., Ayton, A., & Freebairn, I. (1975). Strategies: V.1: Integrated english language materials (1st edition.). Longman.

Cita Chicago Style (17a ed.)

Abbs, Brian, Angela Ayton, y Ingrid Freebairn. Strategies: V.1: Integrated English Language Materials. 1st edition. London: Longman, 1975.

Cita MLA (8a ed.)

Abbs, Brian, et al. Strategies: V.1: Integrated English Language Materials. 1st edition. Longman, 1975.