Broeck, Walter van den
Manteau, 1982
Buku Teks
Levin, Gerald, author
Harcourt, Brace & World, 1966
Buku Teks
Patton, Kevin T.
Elsevier, 2010
Buku Referensi
Gitman, Lawrence J., author
Addison-Wesley, 2000
Buku Teks
Gauch, Hugh G., 1942-, author
Cambridge University Press, 2012
Buku Teks