Cita APA

Harrison, M., & Mark Harrison. (1995). Grammar Spectrum 2: English rules and practice,Pre-intermediate with answer. Oxford: Oxford University Press.

Citación estilo Chicago

Harrison, Mark, y Mark Harrison. Grammar Spectrum 2: English Rules and Practice,Pre-intermediate With Answer. Oxford: Oxford University Press, 1995.

Cita MLA

Harrison, Mark, y Mark Harrison. Grammar Spectrum 2: English Rules and Practice,Pre-intermediate With Answer. Oxford: Oxford University Press, 1995.