Perry, James W.
Wadsworth, 1996
Buku Referensi
Strete, Dennis, author
McGraw-Hill, 2012
Buku Teks
Roland, Jean-Claude
Little, Brown and Company, 1977
Buku Referensi
Lynn, Pamela Barbara, 1961-, author
Erlangga, 2010
Buku Teks
Gerhard Michal, Dietmar Schomburg, editors
Wiley, 2012
Buku Teks