Παραπομπή APA

Bergstrom,Theodote C, & Hal,R.Varier. (1999). workouts in intermediate microeconomics (5.). W.W.Norton & Company.

Παραπομπή Chicago Style

Bergstrom,Theodote C, και Hal,R.Varier. Workouts in Intermediate Microeconomics. 5. New York: W.W.Norton & Company, 1999.

Παραπομπή MLA

Bergstrom,Theodote C, και Hal,R.Varier. Workouts in Intermediate Microeconomics. 5. W.W.Norton & Company, 1999.