APA (7th ed.) Citation

Gelb, M. J. (1999). The how to think like Leornardo da Vinci workbook. Dell Publishing.

Chicago Style (17th ed.) Citation

Gelb, Michael J. The How to Think like Leornardo Da Vinci Workbook. New York: Dell Publishing, 1999.

MLA (9th ed.) Citation

Gelb, Michael J. The How to Think like Leornardo Da Vinci Workbook. Dell Publishing, 1999.