Cita APA (7th ed.)

Hart, G. (1997). 30 minutes - to succeed in business writing. Kogan Page.

Cita Chicago (17th ed.)

Hart, Graham. 30 Minutes - to Succeed in Business Writing. New Delhi: Kogan Page, 1997.

Cita MLA (8th ed.)

Hart, Graham. 30 Minutes - to Succeed in Business Writing. Kogan Page, 1997.