Cita APA (7th ed.)

Sinclair, B., & Prowse, P. (1996). Activate your english: Intermediate coursebook. Cambridge University Press.

Cita Chicago (17th ed.)

Sinclair, Barbara, i Philip Prowse. Activate Your English: Intermediate Coursebook. Nueva York: Cambridge University Press, 1996.

Cita MLA (9th ed.)

Sinclair, Barbara, i Philip Prowse. Activate Your English: Intermediate Coursebook. Cambridge University Press, 1996.