Golding, E.W.
Pitman Paperbacks, 1970
Buku Teks
Braccio, Michael
Reston Publishing Company, Inc., 1978
Buku Teks
Stout, Melville B.
Prentice Hall of India, 1986
Buku Teks
Popov, Vladimir V.
Mir Publishers, 1970
Buku Teks
Robertson, Christopher R.
Edward Arnold, 1993
Buku Teks