Gaya APA

Dale, N., Weems, C. (1994). PASCAL Fourth Edition (^a4 ^bJilid 1). USA: D.C. Heath and company.

Gaya MLA

Dale, Nell., Weems, Chip. "PASCAL Fourth Edition". ^a4 ^bJilid 1 USA: D.C. Heath and company, 1994. Text.