Deutsch, Kenneth, author
Wadsworth and Cengage Learning, 2009
Buku Teks
by Christopher S. Allen [and others]
D.C. Health, 1987
Buku Teks
Duranti, Marco, author
Oxford University Press, 2017
eBooks
Deutsch, Kenneth L., author
Thomson, 2009
Buku Teks
Bury, J.B., author
Oxforkd Univ.Press, 1952
Buku Teks