Nicola Yelland
Open University Press, 2010
Buku Teks
edited by Ann Farrell, Sharon Lynn Kagan and E. Kay M. Tisdall
SAGE Publications, 2016
Buku Teks
Paciorek, Karen Menke, author
McGraw-Hill, Higher Education, 2008
Buku Teks
Baldock, Peter, author
McGraw-Hill, 2011
Buku Teks
Marcella Josephine, author
Fakultas Psikologi Universitas Indonesia, 2017
UI - Skripsi (Membership)