Spence, R. (1991). Clipper, programming guide (2nd ed.). B.P.B. publications.
シカゴスタイル引用形Spence, Rick. Clipper, Programming Guide. 2nd ed. Delhi: B.P.B. publications, 1991.
MLA引用形式Spence, Rick. Clipper, Programming Guide. 2nd ed. B.P.B. publications, 1991.
警告: この引用は必ずしも正確ではありません.