APA
(2001). Congressional directory 2001-2002. Washington , DC: United states government printing office.
Chicago
2001. Congressional directory 2001-2002. Washington , DC: United states government printing office.
Harvard
(2001). Congressional directory 2001-2002. Washington , DC: United states government printing office.
MLA
Congressional directory 2001-2002. Washington , DC: United states government printing office. 2001.