Elisabet Yakoba, author
Fakultas Ilmu Administrasi Universitas Indonesia, 2024
UI - Tesis Membership
Houston, Brant, author
St. Martin Press, 1996
Buku Referensi
Mac Dangall, Curtis D., author
Macmillan, 1967
Buku Teks
Izard, Halph S., author
Hunt Publishing Company, 1977
Buku Teks
Rucker, Bryce W., author
The Iowa State Univ. Press, 1964
Buku Teks