SIMPSON ALAN. (1991). DBASE IV 1.1 PROGRAMMER`S DESKTOP REFERENCE. TECH PUBLICATIONS.
Chicagoスタイル(17版)引用形式SIMPSON ALAN. DBASE IV 1.1 PROGRAMMER`S DESKTOP REFERENCE. SINGAPORE: TECH PUBLICATIONS, 1991.
MLA(9版)引用形式SIMPSON ALAN. DBASE IV 1.1 PROGRAMMER`S DESKTOP REFERENCE. TECH PUBLICATIONS, 1991.
警告: この引用は必ずしも正確ではありません.