Παραπομπή APA

Roy, M., & Dastidar D Ghosh. (1989). Cobol programming. Tata McGraw-Hill.

Παραπομπή Chicago Style

Roy, M.K, και Dastidar D Ghosh. Cobol Programming. New Delhi: Tata McGraw-Hill, 1989.

Παραπομπή MLA

Roy, M.K, και Dastidar D Ghosh. Cobol Programming. Tata McGraw-Hill, 1989.