APA (7th ed.) Citation

Sitepu, T. J. (2011). Presentation with IMPACT. Gramedia Pustaka Utama.

Chicago Style (17th ed.) Citation

Sitepu, Tedy J. Presentation with IMPACT. Gramedia Pustaka Utama, 2011.

MLA (8th ed.) Citation

Sitepu, Tedy J. Presentation with IMPACT. Gramedia Pustaka Utama, 2011.

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