APA (7th ed.) Citation

Yourdon, E. (1972). Design of on-line computer systems (9. print.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Yourdon, Edward. Design of On-line Computer Systems. 9. print. Englewood Cliffs, N.J: Prentice-Hall, 1972.

MLA (9th ed.) Citation

Yourdon, Edward. Design of On-line Computer Systems. 9. print. Prentice-Hall, 1972.