Cita APA (7th ed.)

SWAN, M., & WALTER, C. (1986). The cambridge english course 1: Student book. Cambridge University Press.

Cita Chicago (17th ed.)

SWAN, Michael, i Catherine WALTER. The Cambridge English Course 1: Student Book. Cambridge: Cambridge University Press, 1986.

Cita MLA (9th ed.)

SWAN, Michael, i Catherine WALTER. The Cambridge English Course 1: Student Book. Cambridge University Press, 1986.