Beaumont, D. (2002). Elemantary English Grammar. Kesaint Blanc.
Chicago Style (17th ed.) CitationBeaumont, Digby. Elemantary English Grammar. Kesaint Blanc, 2002.
MLA引文Beaumont, Digby. Elemantary English Grammar. Kesaint Blanc, 2002.
警告：这些引文格式不一定是100％准确.