APA Style

Hawking, L. et al (2009). George's Secret Key To the Universe : Kunci Rahasia George ke Alam Semesta Lucy & Stephen (Terjemahan) . Jakarta: Gramedia.

MLA Style

Hawking, Lucy. et al. "George's Secret Key To the Universe : Kunci Rahasia George ke Alam Semesta Lucy & Stephen (Terjemahan)". Jakarta: Gramedia, 2009. Printed Book.