edited by Jean M. Williams, Vikki Krane
McGraw-Hill, 2015
Buku Teks
Jarvis, Matt, 1966-, author
Routledge, 2005
Buku Teks
edited by Judy L. Van Raalte, Britton W. Brewer
American Psychological Association, 2002
Buku Teks
Dian Puspa Pratiwi, author
Fakultas Psikologi Universitas Indonesia, 2015
UI - Skripsi Membership
Nikki Antonio Saputra, author
Universitas Indonesia, 2012
UI - Skripsi Open