Augustynek, Zdzislaw
Kluwer Academic, 1989
Buku Teks
Ryder, Robert G.
Sage publications , 1987
Buku Teks
Iqraa Runi Aprilia
2017
UI - Skripsi (Membership)
Cahoone, Lawrence E.
The Pennsylvania state university press, 2005
Buku Teks
Herskovits, Melville J. (Melville Jean), 1895-1963
Random House, 1972
Buku Teks