Fritsch, F.E., author
Vikas, 1979
Buku Teks
editod by L. Elliot Shubert
Acedemic Press, 1994
Buku Teks
Sze, Philip
Iowa Wm.C.Brown Pub., 1993
Buku Teks
Chapman, V. J. (Valentine Jackson), 1910-, author
At The University Press, 2013
Buku Teks
Sharma, I.C.
Johsen Publishing Company, 1965
Buku Teks