Gaya APA

Chopra, D, &, C, G. (2011). The seven spiritual laws of superheroes: Harnessing our power to change the world. . New York: New York HarperCollins Publishers.

Gaya MLA

Chopra, Deepak, &, Chopra,, Gotham. "The seven spiritual laws of superheroes: Harnessing our power to change the world. ". New York: New York HarperCollins Publishers, 2011. Buku.