Geer, John Gray
Gateways to democracy: an introduction to American government
Wadsworth and Cengage Learning, 2012
Buku Teks
Dell, J. A.
The gateways of knowledge : an introduction to the study of the senses
Univ. Press , 2013
Buku Teks
Coon, Dennis
Introduction to psychology: gateways to mind and behavior
Wadsworth , 2001
Buku Teks
Coon, Dennis
Introduction to psychology : gateways to mind and behavior
MA Cengage Learning, 2016
Buku Teks
Ball, Donald A.
International business: introduction and essentials
Business Publications, 1985
Buku Teks