APA Style

Spezzano, C. (2004). 50 Ways to let go and be happy: Agar bahagia lepaskanlah! . Jakarta: PT Gramedia Pustaka utama.

MLA Style

Spezzano, Chuck. "50 Ways to let go and be happy: Agar bahagia lepaskanlah!". Jakarta: PT Gramedia Pustaka utama, 2004. Text.