Cita APA (7a ed.)

Chorafas, D. N. (1986). Fourth and fifth generation programming languages. McGraw-Hill.

Cita Chicago Style (17a ed.)

Chorafas, Dimitris N. Fourth and Fifth Generation Programming Languages. New York [etc.]: McGraw-Hill, 1986.

Cita MLA (9a ed.)

Chorafas, Dimitris N. Fourth and Fifth Generation Programming Languages. McGraw-Hill, 1986.