Golding, E.W.
Pitman Paperbacks, 1970
Buku Teks SO
Braccio, Michael
Reston Publishing Company, Inc., 1978
Buku Teks SO
Stout, Melville B.
Prentice Hall of India, 1986
Buku Teks SO
Popov, Vladimir V.
Mir Publishers, 1970
Buku Teks SO
Pillai, S.K.
Wiley Eastern, 1985
Buku Teks SO