Stokes, William Lee, 1915-, author
Prentice-Hall, 1962
Buku Teks
Stokes, William Lee, 1915-, author
Prentice-Hall, 1966
Buku Teks
Stewart, John C.
Burgess Publishing Company, 1968
Buku Teks
Hussey, Russell C.
McGraw-Hill, 1947
Buku Teks
Woodford, A.O., author
W H Freeman, 1965
Buku Teks