Παραπομπή APA

Gates, B., & Rogak, L. (2012). Impatient optimist: Bill gates in his own words. Collins Business.

Παραπομπή Chicago Style

Gates, Bill, και Lisa Rogak. Impatient Optimist: Bill Gates in His Own Words. Utterpradesh: Collins Business, 2012.

Παραπομπή MLA

Gates, Bill, και Lisa Rogak. Impatient Optimist: Bill Gates in His Own Words. Collins Business, 2012.