Gaya APA

David, H, D., GUNAWAN/2019010461062, C. (1980). Marketing Management: A Planning Approach (1). USA: Unirsitas Jayabaya.

Gaya MLA

David, Hughes, D., GUNAWAN/2019010461062, CYNTHIA. "Marketing Management: A Planning Approach". 1 USA: Unirsitas Jayabaya, 1980. Text.