APA citiranje

Astroff, M. T. (1995). Conversation sales and services. U.S.A: Waterbury.

Trích dẫn kiểu Chicago

Astroff, Milton T. Conversation Sales and Services. U.S.A: Waterbury, 1995.

MLA citiranje

Astroff, Milton T. Conversation Sales and Services. U.S.A: Waterbury, 1995.

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