Spokane, Arnold R.
Prentice-Hall, 1991
Buku Referensi
Michael Bagus
Sekolah Kajian Stratejik dan Global Universitas Indonesia, 2024
UI - Tesis Membership
Thomas, Edwin J.
Sage, 1984
Buku Teks
Arnold, Chester R.
Tata McGraw-Hill, 1977
Buku Teks
ERIC Counseling and Student Services Clearinghouse, 1998
Buku Teks