Fersch, Ellsworth A.
Charles C. Thomas, 1979
Buku Teks
Whitaker, Leighton C.
Fla. : CRC Press, , 2000.
Buku Teks
Cambridge University Press, 2016
eBooks
editedby Robert N. Singer, Heather A. Hausenblas and Christopher M. Janelle
Wiley, 2001
Buku Teks
Oxford University Press , 1990
Buku Teks