Russell, A.A., author
Burgee, 1977
Buku Teks
Murov, Steven L., author
Thomson, Brooks/Cole, 2007
Buku Teks
Young, Brian
The Nuffield Foundation, 1967
Buku Teks
Russell, John B., author
McGraw-Hill, 1981
Buku Teks
Glinka, N., author
Mir Publisher, 1960
Buku Teks