Gaya APA

Philippakis, A, S., Kazmier, L, J. (1978). Information systems throgh cobol (2nd.ed.). Aucland: mcGraw-Hill Int. Book Co..

Gaya MLA

Philippakis, Andreas, S.., Kazmier, Leonard, J.. "Information systems throgh cobol". 2nd.ed. Aucland: mcGraw-Hill Int. Book Co., 1978. Text.