APA (7th ed.) Citation

Purbo, O. W. (1999). Mengenal e-Commerce. elex media komputindo.

Chicago Style (17th ed.) Citation

Purbo, Onno W. Mengenal E-Commerce. elex media komputindo, 1999.

MLA (8th ed.) Citation

Purbo, Onno W. Mengenal E-Commerce. elex media komputindo, 1999.

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