Buffa, Elwood S. (Elwood Spencer), author
Erlangga, 1984
Buku Teks
Buffa, Elwood S. (Elwood Spencer)
Binarupa Aksara, 1999
Buku Teks
Buffa, Elwood S. (Elwood Spencer), author
Erlangga , 1989
Buku Teks
Buffa, Elwood S. (Elwood Spencer), author
Erlangga, 1987
Buku Teks
Stevenson, William J., author
Richard D. Irwin, 1986
Buku Teks