Gomm, H. (2002). Market leader: Portfolio. England: Longman.
Trích dẫn kiểu ChicagoGomm, Helena. Market Leader: Portfolio. England: Longman, 2002.
MLA引文Gomm, Helena. Market Leader: Portfolio. England: Longman, 2002.
警告：這些引文格式不一定是100％准確.
APA引文