Wylie, Herry L.
Prentice-Hall, 1961
Buku Teks
Kallaus, Norman Francis, 1924-, author
South-Western Publishing, 1987
Buku Teks
Terry, George Robert, author
Richard D. Irwin, 1975
Buku Teks
Bell, William D., author
McGraw-Hill, 1957
Buku Teks
Dann Sugandha
Intermedia, 1988
Buku Teks