Sutton, Raul, author
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Sackheim, George I., author
Macmillan, 1968
Buku Teks
Barrow, Gordon M., author
McGraw-Hill, 1981
Buku Teks
Barrante, James R., author
Prentice-Hall, 1977
Buku Teks
de Vries, Louis, author
McGraw-Hill, 1951
Buku Referensi