Artikel Jurnal
edited by Frank Yates
Wiley, c1992
Buku Teks
edited by Ralph J. Diclemente, William B. Hansen, Lynn E. Ponton
Plenum Press, 1996
Buku Referensi
Indah Mutiara Artifa, author
2018
UI - Skripsi Membership
Niken Hayu Wulandari, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2018
UI - Skripsi Membership