APA (7th ed.) Citation

Ashby, G. P., & Heilman, R. L. (1971). Introduction to I/O concepts and job control language for the IBM operating system 360. Dickenson Pub. Co..

Chicago Style (17th ed.) Citation

Ashby, Gordon P., and Robert L. Heilman. Introduction to I/O Concepts and Job Control Language for the IBM Operating System 360. Encino, Calif.: Dickenson Pub. Co., 1971.

MLA (9th ed.) Citation

Ashby, Gordon P., and Robert L. Heilman. Introduction to I/O Concepts and Job Control Language for the IBM Operating System 360. Dickenson Pub. Co., 1971.