Macmillan Press, 1978
Buku Teks
Breneman, W.R., author
Xerox College Publishing, 1959
Buku Teks
University Tutorial Press , 1977
Buku Teks
Cornwell, Alan, author
McGraw-Hill, 1974
Buku Teks
Volpe, E. Peter (Erminio Peter), author
W.C. Brown, 1975
Buku Teks