(1998). Word power. National Text Book.
Chicago Style (17th ed.) CitationWord Power. National Text Book, 1998.
MLA引文Word Power. National Text Book, 1998.
警告：这些引文格式不一定是100％准确.
APA引文
(1998). Word power. National Text Book.
Chicago Style (17th ed.) CitationWord Power. National Text Book, 1998.
MLA引文Word Power. National Text Book, 1998.