Cambridge University Press, 2020
eBooks
Samovar, Larry A., author
Wadsworth and Cengage Learning, 2012
Buku Teks
Scollon, Ronald, author
Blackwell Publishing, 2001
Buku Teks
Martin, Judith N., author
McGraw-Hill, 2008
Buku Teks
Martin, Judith N., author
McGraw-Hill, 2001
Buku Teks