Helling, P. (1992). The grammar and proofreading course. American Management Association.
Style de citation Chicago (17e éd.)Helling, Pamela. The Grammar and Proofreading Course. [Place of publication not identified]: American Management Association, 1992.
Style de citation MLA (8e éd.)Helling, Pamela. The Grammar and Proofreading Course. American Management Association, 1992.
Attention : ces citations peuvent ne pas être correctes à 100%.