APA-referens (7:e uppl.)
American Philatelic Society. Fifty-second American Philatelic Congress: October 24-26, 1986 : Ambassador Hotel. Los Angeles, California.
Chicago-referens (17:e uppl.)
American Philatelic Society. Fifty-second American Philatelic Congress: October 24-26, 1986 : Ambassador Hotel. Los Angeles, California.
MLA-referens (9:e uppl.)
American Philatelic Society. Fifty-second American Philatelic Congress: October 24-26, 1986 : Ambassador Hotel. Los Angeles, California.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.