Hall, Bradford J.
Routledge, Taylor & Francis Group, 2018
Buku Teks
Samovar, Larry A.
Wadsworth, Thomson Learning, 2000
Buku Teks
by Larry A. Samovar, Richard E Porter, Edwin R McDaniel, Carolyn S Roy
Wadsworth and Cengage Learning, 2013
Buku Teks SO
Yusuf Arianto
Fakultas Psikologi Universitas Indonesia, 2013
UI - Tesis Membership
Samovar, Larry A.
Humanika, 2010
Buku Teks