APA (7th ed.) Citation

Sopiah & Sangadji, E. M. (2016). Salesmanship (kepenjualan). Bumi Aksara.

Chicago Style (17th ed.) Citation

Sopiah and Etta Mamang Sangadji. Salesmanship (kepenjualan). Bumi Aksara, 2016.

MLA (8th ed.) Citation

Sopiah and Etta Mamang Sangadji. Salesmanship (kepenjualan). Bumi Aksara, 2016.

Warning: These citations may not always be 100% accurate.