Gray, Jerry L., author
Charles E. Merrill, 1984
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1998
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1997
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1993
Buku Teks
Robbins, Stephen P., author
Prentice-Hall, 1993
Buku Teks