Sederberg, Peter C.
Chandler & Sharp Publishers, 1977
Buku Teks
Mahoney, Edward F.
Reston Publishing, 1983
Buku Teks
Savitz, David A.
Oxford University Press, 2016
eBooks
Omnes, Roland
Princeton University Press , 1999
Buku Teks
Arnold, A.
Prentice-Hall, 1996
Buku Teks