Peters, Herman Jacob, 1917-, author
Macmillan, 1963
Buku Teks
Littlewood, William, author
Cambridge Uniiversity Press , 1983
Buku Teks
Littlewood, William, author
Cambridge University Press, 1994
Buku Teks
Littlewood, William, author
Cambridge University Press, 1998
Buku Teks
Parrish, Betsy, author
McGraw-Hill , 2004
Buku Teks