Rousseau, Jerome
KITLV Press , 1998
Buku Teks
edited by Elizabeth M. Dowling, W. George Scarlett
Sage Publications, 2006
Buku Referensi
Basabe, Fernando M.
Sophia University, in cooperation with Charles E. Tuttle, 1968
Buku Teks
Abdul Kalam, A.P.J.
Ocean Books, 2005
Buku Teks
Durkheim, Emile, author
George Allen and Unwin, 1954
Buku Teks