Cita APA (7a ed.)

Keen, J. S. (1987). Managing systems development (2nd ed.). John Wiley & Sons.

Cita Chicago Style (17a ed.)

Keen, Jeffrey S. Managing Systems Development. 2nd ed. Chichester [etc.]: John Wiley & Sons, 1987.

Cita MLA (9a ed.)

Keen, Jeffrey S. Managing Systems Development. 2nd ed. John Wiley & Sons, 1987.