APA (7th ed.) Citation

Harvey, C. (1989). Secreets of the world's top sales performers. Business Books.

Chicago Style (17th ed.) Citation

Harvey, Christine. Secreets of the World's Top Sales Performers. London: Business Books, 1989.

MLA (9th ed.) Citation

Harvey, Christine. Secreets of the World's Top Sales Performers. Business Books, 1989.

Warning: These citations may not always be 100% accurate.