Dyfyniad APA

Gould, J. P., & Lazear, E. P. (1989). Microeconomic theory (6th ed.). Irwin.

Dyfyniad Arddull Chicago

Gould, John P., and Edward P. Lazear. Microeconomic Theory. 6th ed. Homewood, IL ; New Delhi: Irwin, 1989.

Dyfyniad MLA

Gould, John P., and Edward P. Lazear. Microeconomic Theory. 6th ed. Irwin, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.