Suchy, Ivana, author
McGraw-Hill, 2006
Buku Referensi
Das, P. K., author
A.A. Balkema, 1984
Buku Referensi
Briggs, Leslie J.
Englewood Cliffs , 1981
Buku Teks
Yeaple, Franklin D., author
Marcel Dekker, Inc., 1990
Buku Referensi
Swanson, Stephen R., author
Prentice-Hall, 1997
Buku Teks