Heisler, Sanford I
John Wiley & Sons, 1984
Buku Referensi
editor, Wolfgang Kresse, David M. Danko
Springer, 2012
eBooks
Senft, Sandra
CRC Press, 2013
Buku Teks
edited by C.J. Armstrong and Andrew Large
Gower, 2001
Buku Referensi
editors, Gerald P. Koocher, John C. Norcross, Sam S. Hill, III
Oxford University Press, 2005
Buku Teks