Leffingwell, William Henry
McGraw-Hill , 1950
Buku Teks
Wylie, Herry L.
Prentice-Hall, 1961
Buku Teks
Terry, George Robert, author
Richard D. Irwin, 1975
Buku Teks
Fairbanks, Ralph W., author
Prentice-Hall, 1956
Buku Teks
Foster, Thelma J.
Stanley Thornes, 1994
Buku Teks