Gaya APA

Philippakis, A, S., Kazmier, L, J. (1981). STRUCTURED COBOL (Second Edition). New York: McGraw-Hill Book Company.

Gaya MLA

Philippakis, A., S., Kazmier, Leonard, J.. "STRUCTURED COBOL". Second Edition New York: McGraw-Hill Book Company, 1981. Textbook.