Mancill, Julian D.
Dodd, Mead & Company, 1968
Buku Teks
Swokowski, Earl W., author
Brooks/Cole Cengage Learning, 2012
Buku Teks
Brumfiel, Charles Francis, 1914-, author
California State Department of Education , 1965
Buku Teks
Harmon, Frank L., author
Dickenson, 1996
Buku Teks
Anton, Howard, author
John Wiley & Sons, 1995
Buku Teks