Gaya APA

Littauer, F. et al (2011). Personality Plus (Kepribadian Plus) (Edisi 1). Tangerang Selatan: Karisma Publishing Group.

Gaya MLA

Littauer, Florence. et al. "Personality Plus (Kepribadian Plus)". Edisi 1 Tangerang Selatan: Karisma Publishing Group, 2011. Text.