APA (7th ed.) Citation

Richardson & Mary Ann Castronovo Fusco. (1993). The + 10 percent principle: How to get extraordinary results from ordinary people. Toppan Company.

Chicago Style (17th ed.) Citation

Richardson and Mary Ann Castronovo Fusco. The + 10 Percent Principle: How to Get Extraordinary Results from Ordinary People. Singapore: Toppan Company, 1993.

MLA (8th ed.) Citation

Richardson and Mary Ann Castronovo Fusco. The + 10 Percent Principle: How to Get Extraordinary Results from Ordinary People. Toppan Company, 1993.