Luthans, Fred
McGraw-Hill, 1981
Buku Teks
Gennifer Furst, editor
SAGE , 2009
Buku Teks
Edited by Michael Huemer
Routledge, 2002
Buku Teks
Little, Brown & Co., 1986
Buku Teks
Monzer Kahf, Siti Mashitoh Mahamood, editor
CERT Publications Sdn. Bhd, 2011
Buku Teks