Lauer, Robert H.
Rineka Cipta, 2003
Buku Teks
Lauer, Robert H.
Allyn and Bacon, 1982
Buku Teks
edited by Bob Pease and Jan Fook
Routledge, 1999
Buku Teks
Kirst-Ashman, Karen Kay
Cengage Learning , 2017
Buku Teks
Kirst, Ashman Karen Kay
Cengage Learning, 2013
Buku Teks