Ambrose, Timothy, author
Routledge, 2012
Buku Teks
Lauer, David A., 1955-2011, author
Thomson Learning, 1995
Buku Teks
Lauer, David A., 1955-2011, author
Wadsworth and Cengage Learning, 2008
Buku Teks
Lauer, David A., 1955-2011, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Plummer, Kenneth, author
Rajawali, 2011
Buku Teks