Cita APA (7a ed.)

Coe, N. (1997). Grammar spectrum 3: [english rules and practice] (3rd imp.). Oxford University Press.

Cita Chicago Style (17a ed.)

Coe, Norman. Grammar Spectrum 3: [english Rules and Practice]. 3rd imp. Oxford: Oxford University Press, 1997.

Cita MLA (9a ed.)

Coe, Norman. Grammar Spectrum 3: [english Rules and Practice]. 3rd imp. Oxford University Press, 1997.