Radin, Max
St Paul Minn, 1936
Buku Teks
Maxwell, Robert L., author
American Library Association, 2004
Buku Referensi
Atiyah, P.S., author
Oxford University Press , 1987
Buku Teks
edited by Michael Gorman, Paul W. Winkler
American Library Association, 1978
Buku Referensi
Eder, Phanor J., author
New York University press, 1950
Buku Teks