Close, R. A. (1976). English as a foreign language: Its constant grammatical problems. George allen & unwin.
Styl cytowania ChicagoClose, R. A. English as a Foreign Language: Its Constant Grammatical Problems. London: George allen & unwin, 1976.
Styl cytowania MLAClose, R. A. English as a Foreign Language: Its Constant Grammatical Problems. George allen & unwin, 1976.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..