Tellefsen, Thomas E., author
Jossey-Bass, 1990
Buku Teks
Weaver, Barbara N., author
John Wiley & Sons, 1974
Buku Teks
Kerzner, Harold R., author
John Wiley & Sons, 2001
Buku Teks
Kerzner, Harold R., author
John Wiley & Sons, 2003
Buku Teks
edited by Robert B. Williams, Gordon L. Culp
Van Nostrand Reinhold, 1986
Buku Referensi