Ida Irma Pratitia R., author
Fakultas Psikologi Universitas Indonesia, 2005
UI - Tesis Membership
Noe, Raymond A.
McGraw-Hill, 2003
Multimedia
Desimone, Randy L., author
South Western Cengage Learning, 2012
Buku Teks
Abdul Gafur, author
Secretariate of the Minister of Youth Affairs, Ministry of Education and Culture, 1978
Buku Teks
Rusliah Wibisana, author
Fakultas Psikologi Universitas Indonesia, 2002
UI - Tesis Membership