Cita APA (7a ed.)

Marshall, G., & Budgett, H. (1983). Programming with graphics. Granada.

Cita Chicago Style (17a ed.)

Marshall, Garry, y Henry Budgett. Programming with Graphics. London [etc.]: Granada, 1983.

Cita MLA (9a ed.)

Marshall, Garry, y Henry Budgett. Programming with Graphics. Granada, 1983.