APA Citatie

Lawrence, R., & Newcomer, M. S. (1986). Theory and problems of programming with structured COBOL. McGraw-Hill.

Chicago Style citaat

Lawrence, R., en M. S. Newcomer. Theory and Problems of Programming with Structured COBOL. New York: McGraw-Hill, 1986.

MLA citatie

Lawrence, R., en M. S. Newcomer. Theory and Problems of Programming with Structured COBOL. McGraw-Hill, 1986.