Cita APA (7a ed.)

Brande, L. v. d. (1993). Flexible and distance learning. John Wiley & Sons.

Cita Chicago Style (17a ed.)

Brande, Lieve van den. Flexible and Distance Learning. Chichester [etc.]: John Wiley & Sons, 1993.

Cita MLA (9a ed.)

Brande, Lieve van den. Flexible and Distance Learning. John Wiley & Sons, 1993.