Gaya APA

Ardianto, J., I.Aini, . (2015). One hundred Seventy Seven Problem Solving Of Direct Marketing (Cet ke 1). Yogyakarta: Flashbooks.

Gaya MLA

Ardianto, Joni., I.Aini, . "One hundred Seventy Seven Problem Solving Of Direct Marketing". Cet ke 1 Yogyakarta: Flashbooks, 2015. Text.