Chalker, S. (1984). Current english grammar. MacMillan.
Chicago Style (17th ed.) CitationChalker, Sylvia. Current English Grammar. Londres: MacMillan, 1984.
MLA (9th ed.) CitationChalker, Sylvia. Current English Grammar. MacMillan, 1984.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.