Cambridge University Press, 1973
Buku Teks
Vidya Imanuari Pertiwi, author
Bestuurskunde, 2021
Artikel Jurnal
Thomas, Lynn Louis
Xerox University Microfilm, 1977
Buku Teks
Singarimbun, Masri, author
University of California Press, 1975
Buku Teks
Graburn, Nelson
Harper & Row, Publishers, 1971
Buku Teks