Παραπομπή APA

Ruston, H. (1978). Programming with PL/I. McGraw-Hill.

Παραπομπή Chicago Style

Ruston, Henry. Programming with PL/I. New York: McGraw-Hill, 1978.

Παραπομπή MLA

Ruston, Henry. Programming with PL/I. McGraw-Hill, 1978.