APA (7th ed.) Citation

Hanna, P., Salim, E., & Syafrida, I. (2002). Believe and achieve!=yakinlah, anda pasti berhasil!! Erlangga.

Chicago Style (17th ed.) Citation

Hanna, Paul, Emil Salim, and Ida Syafrida. Believe and Achieve!=yakinlah, Anda Pasti Berhasil!! Erlangga, 2002.

MLA (8th ed.) Citation

Hanna, Paul, et al. Believe and Achieve!=yakinlah, Anda Pasti Berhasil!! Erlangga, 2002.