Newstrom, John W., author
Tata McGraw-Hill , 1997
Buku Teks
Neuman, William Lawrence, 1950-, author
Allyn and Bacon, 2003
Buku Teks
Prentice Hall of India, 1977
Buku Teks
Neuman, William Lawrence, 1950-, author
Allyn and Bacon, 1994
Buku Teks
Neuman, William Lawrence, 1950-, author
Pearson/Allyn and Bacon, 2006
Buku Teks