Gaya APA

Levine, S, R. et al (2017). leader in you: how to win friends, influence people, and succeed in a changing world (First Gallery Books trade paperback edition.). nyu: Gallery Books.

Gaya MLA

Levine, Stuart, R.,. et al. "leader in you: how to win friends, influence people, and succeed in a changing world". First Gallery Books trade paperback edition. nyu: Gallery Books, 2017. print.