APA (7th ed.) Citation

Usmara, A., & B, B. (2007). Marketing classics. Amara Books.

Chicago Style (17th ed.) Citation

Usmara, A., and Budiningsih B. Marketing Classics. Amara Books, 2007.

MLA (8th ed.) Citation

Usmara, A., and Budiningsih B. Marketing Classics. Amara Books, 2007.

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