Cambridge University Press, 2005
eBooks
Hogg, Richard
Cambridge University Press , 1987
Buku Teks
Ternes, Elmar
Wissenschaftliche Buchgesellschaft , 1999
Buku Teks
Sloat, Clarence
Prentice-Hall, 1978
Buku Teks
Simanjuntak, Mangantar
Gaya Media Pratama, 1990
Buku Teks