Springer Singapore, 2019
eBooks
Berelson, Bernard, author
The Population Council, 1975
Buku Teks
Henderson, Justin, author
Rockport, 2003
Buku Teks
Vogel, Harold L., author
Cambridge University Press, 2007
Buku Teks
Hughes, Langston
Prentice-Hall, 1967
Buku Teks