Cita APA (7a ed.)

Sylva, K., Czerniewska, P., & Woodhead, M. (1985). Play. Open University Press.

Cita Chicago Style (17a ed.)

Sylva, Kathy, Pam Czerniewska, y Martin Woodhead. Play. Milton Keynes: Open University Press, 1985.

Cita MLA (8a ed.)

Sylva, Kathy, et al. Play. Open University Press, 1985.