Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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