Thompson, F.G.
Longmans, Green and Co, Ltd., 1968
Buku Teks
Thompson, F.G.
Longman Scientific and Technical, 1992
Buku Teks
Parmley, Robert O., author
McGraw-Hill, 1981
Buku Referensi
edited by Gavriel Salvendy
John Wiley & Sons, 1982
Buku Referensi
H.B. Maynard, editor-in-chief
McGraw-Hill, 1971
Buku Referensi