Geoffrey Hirt. (1996). Study guide: Business a changing world. New York.
Trích dẫn kiểu ChicagoGeoffrey Hirt. Study Guide: Business a Changing World. New York, 1996.
MLA引文Geoffrey Hirt. Study Guide: Business a Changing World. New York, 1996.
警告:這些引文格式不一定是100%准確.