Woodward, J. F., author
Macmillan, 1975
Buku Teks
Godfrey, Arthur
Edward Arnold, 1978
Buku Teks
Cetron, Marvin J., author; Insenson, Raymond, author; Johnson, Jacob N., author; Nutt, Ambrose B., author; Wells, Howard A., author
M.I.T. Press, 1969
Buku Referensi
Krajewski, Lee J., author
John Wiley & Sons, 1981
Buku Teks
Wartburg, Walther V.
Barnew and noble, 1969
Buku Teks