Mercer, E.H., author
John Wiley & Sons, 1981
Buku Teks
Kathryn S. Plaisance
Springer, 2012
eBooks
Panchen, Alec L., author
Cambridge University Press, 1994
Buku Teks
Dublin, Louis I.
The Ronald Press, 1949
Buku Teks
Davis, Rowland H., author
Oxrord University Press, 2003
Buku Teks