Lannon M. Michael, Tullis G. Graham, & Trappe T. Tonya. (1999). Insights into Business: Teacher's Book. Harlow, Longman, 1999.
Chicago Style (17. basım) AtıfLannon M. Michael, Tullis G. Graham, ve Trappe T. Tonya. Insights into Business: Teacher's Book. Harlow, Longman, 1999, 1999.
MLA (9th ed.) AtıfLannon M. Michael, et al. Insights into Business: Teacher's Book. Harlow, Longman, 1999, 1999.
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