Dodd, Carley H.
McGraw-Hill, 1998
Buku Teks
Beamer, Linda, author
McGraw-Hill, 2008
Buku Teks
Beamer, Linda, author
McGraw-Hill, 2001
Buku Teks
Martin, Judith N., author
McGraw-Hill, 2013
Buku Teks
Samovar, Larry A., author
Wadsworth and Cengage Learning, 2012
Buku Teks