de Lauwe, Chombart, author
Organization for economic co-operation and development , 1960
Buku Teks
Artikel Jurnal
Boken, Vijendra K., author
Oxford University Press, 2005
Buku Teks
edited by F.C. Bartlett
Kegan Paul, Trench, 1946
Buku Teks
Yudelman, Montague, author
Harvard University Press , 1975
Buku Teks