MacMahon, Brian, author
Little, Brown and Company, 1970
Buku Teks
Fos, Peter J., author
Jossey- Bass, 2011
Buku Teks
Grobbee, Diederick E., author
Jones and Bartlett Publishers , 2015
Buku Teks
Grobbee, Diederick E., author
Jones & Bartlett Learning, 2015
Buku Teks
Rossignol, Annette
McGraw-Hill , 2007
Buku Teks