Cita APA (7th ed.)

Waters, M., & Waters, A. (1995). Study tasks in inglish: Teacher's book. Cambridge University.

Cita Chicago (17th ed.)

Waters, Mary, i Alan Waters. Study Tasks in Inglish: Teacher's Book. Cambridge: Cambridge University, 1995.

Cita MLA (9th ed.)

Waters, Mary, i Alan Waters. Study Tasks in Inglish: Teacher's Book. Cambridge University, 1995.