Sautoy, Peter Du, author
Oxford University Press, 1960
Buku Teks
Hutchinson, Alfred, author
John Day, 1960
Buku Teks
Apgar, Mahlon, author
McGraw-Hill, 1976
Buku Teks
Shields, James J,Jr
Frederick A. Preager, 1967
Buku Teks
Rubin, Herbert J.
Macmillan, 1992
Buku Teks