Famighetti, Robert. Top-Selling Video Games, 1996 // The World Almanac and Book of Facts 1998 : [англ.]. — World Almanac[англ.], 1997. — P. 259. — «Source: The NPD TRSTS Video Game Tracking Service, The NPD Group, Inc., Port Washington, NY; ranked by units sold». — ISBN 0886878217.