Harrison, M., & Mark Harrison. (1995). Grammar Spectrum 2: English rules and practice,Pre-intermediate with answer. Oxford: Oxford University Press.
Chicago-stil citatHarrison, Mark, och Mark Harrison. Grammar Spectrum 2: English Rules and Practice,Pre-intermediate With Answer. Oxford: Oxford University Press, 1995.
MLA-referensHarrison, Mark, och Mark Harrison. Grammar Spectrum 2: English Rules and Practice,Pre-intermediate With Answer. Oxford: Oxford University Press, 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.