Hart, G. (1997). 30 minutes - to succeed in business writing. Kogan Page.
Chicagoスタイル(17版)引用形式Hart, Graham. 30 Minutes - to Succeed in Business Writing. New Delhi: Kogan Page, 1997.
MLA(8版)引用形式Hart, Graham. 30 Minutes - to Succeed in Business Writing. Kogan Page, 1997.
警告: この引用は必ずしも正確ではありません.