Helling, P. (1992). The grammar and proofreading course. American Management Association.
芝加哥风格引文Helling, Pam. The Grammar and Proofreading Course. [Saranac Lake, N.Y.]: American Management Association, 1992.
MLA引文Helling, Pam. The Grammar and Proofreading Course. American Management Association, 1992.
警告：这些引文格式不一定是100％准确.