Buffa, Elwood S. (Elwood Spencer), author
John Wiley & Sons, 1971
Buku Teks
Buffa, Elwood S. (Elwood Spencer), author
John Wiley & Sons, 1975
Buku Teks
Radford, J.D., author
Macmillan, 1972
Buku Teks
Stevenson, William J., author
Boston: McGraw-Hill, 1999
Buku Teks
Buffa, Elwood S. (Elwood Spencer), author
John Wiley & Sons, 1973
Buku Teks