Gsovski, Vladimir
Atlantic Books, 1959
Buku Teks
Meyer, Alfred G.
Random House, 1965
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1947
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1981
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1965
Buku Teks