Cita APA (7a ed.)

Hammond, R. (1985). Forward 100: LOGO and your child: a new way of learning. Penguin.

Cita Chicago Style (17a ed.)

Hammond, Ray. Forward 100: LOGO and Your Child: A New Way of Learning. Harmondsworth: Penguin, 1985.

Cita MLA (8a ed.)

Hammond, Ray. Forward 100: LOGO and Your Child: A New Way of Learning. Penguin, 1985.