Carin, Arthur A., author
Charles E. Merrill, 1964
Buku Teks
Abruscato, Joseph, author
Allyn and Bacon, 2010
Buku Teks
Polya, George, author
John Wiley & Sons, 1981
Buku Teks
edited by John Sears and Pete Sorensen
Routledge Falmer, 2000
Buku Teks
Carin, Arthur A., author
Charles E. Merrill, 1985
Buku Teks