(1991). Origins '91: The National Gaming Convention and exposition, July 4-7, 1991, Baltimore Convention Center, Hyatt Regency & Sheraton Inner Harbor, Baltimore, Maryland : program booklet. [Game Manufacturers Association].
Chicago Style (17th ed.) CitationOrigins '91: The National Gaming Convention and Exposition, July 4-7, 1991, Baltimore Convention Center, Hyatt Regency & Sheraton Inner Harbor, Baltimore, Maryland : Program Booklet. [United States]: [Game Manufacturers Association], 1991.
MLA (9th ed.) CitationOrigins '91: The National Gaming Convention and Exposition, July 4-7, 1991, Baltimore Convention Center, Hyatt Regency & Sheraton Inner Harbor, Baltimore, Maryland : Program Booklet. [Game Manufacturers Association], 1991.
Warning: These citations may not always be 100% accurate.