Dori Wuwur Hendrikus, author
Kanisius, 1991
Buku Teks
Bormann, Ernest G., author
Erlangga, 1991
Buku Teks
Littlejohn, Stephen W., author
Scott, Foresman and Company, 1987
Buku Teks
Hovland, Carl I
Yale University Press , 1966
Buku Teks
Bormann, Ernest G., author
Erlangga, 1991
Buku Teks