edited by Linda L. Putnam, Michael E. Pacanowsky
Sage, 1983
Buku Teks
Machin, John L.J., author
McGraw-Hill, 1980
Buku Teks
Ira Tenripada, author
2015
UI - Tesis (Membership)
O`Hair, Dan, author
Allyn and Bacon, 2011
Buku Teks
Bovee, Courtland L., author
Pearson, 2016
Buku Teks