Sommers, Christina Hoff
a Touchstone book , 1995
Buku Teks
Okamura, Masu
Gadjah Mada University Press, 1983
Buku Teks
editor, Sri Unggul Sjafrie, Nurhadi Rangkuti
Etnodata, 1992
Buku Teks
Meidinna Fitrie Lestari
2018
UI - Skripsi (Membership)
Horton, Paul B.
McGraw-Hill , 1984
Buku Teks