Gaya APA

Epstein, R. (2001). The big book of motivation games : Quick, fun activities for energizing people at work and at home . New York: McGraw Hill Kogakusha Ltd..

Gaya MLA

Epstein, Robert. "The big book of motivation games : Quick, fun activities for energizing people at work and at home". New York: McGraw Hill Kogakusha Ltd., 2001. Hibah Buku Dra. Anita Lestari,.