Spence, R. (1989). Clipper programming guide. Microtrend Books.
Chicagoスタイル(17版)引用形式Spence, Rick. Clipper Programming Guide. San Marcos, CA: Microtrend Books, 1989.
MLA(9版)引用形式Spence, Rick. Clipper Programming Guide. Microtrend Books, 1989.
警告: この引用は必ずしも正確ではありません.