APA Style

Heo, Soon Bong. (2009). Why? Life Scince (IPA) . Jakarta: PT. Elex Media Komputindo.

Chicago Style

Heo, Soon Bong. Why? Life Scince (IPA). Jakarta: PT. Elex Media Komputindo, 2009. Printed Book.

MLA Style

Heo, Soon Bong. Why? Life Scince (IPA). Jakarta: PT. Elex Media Komputindo, 2009. Printed Book.

Turabian Style

Heo, Soon Bong. Why? Life Scince (IPA). Jakarta: PT. Elex Media Komputindo, 2009. Printed Book.