Levi, M. (1994). Study guide for Economics and the modern world. Lexington, MA: D.C. Heath.
Trích dẫn kiểu ChicagoLevi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.
MLA引文Levi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.
警告:這些引文格式不一定是100%准確.