APA (7th ed.) Citation

The Amateur Softball Association of America. (1989). The Amateur Softball Association of America, official 1989 guide and rule book. Amateur Softball Association of America.

Chicago Style (17th ed.) Citation

The Amateur Softball Association of America. The Amateur Softball Association of America, Official 1989 Guide and Rule Book. Oklahoma City: Amateur Softball Association of America, 1989.

MLA (9th ed.) Citation

The Amateur Softball Association of America. The Amateur Softball Association of America, Official 1989 Guide and Rule Book. Amateur Softball Association of America, 1989.