Gaya APA

Clark, J, L., Clark, L, R. (1985). Workbook for How 4 : a handbook for office workers (4th.ed.). Massachusetts: Kent Pub.Co..

Gaya MLA

Clark, James, Leland., Clark, Lyn, R. "Workbook for How 4 : a handbook for office workers". 4th.ed. Massachusetts: Kent Pub.Co., 1985. Text.