Cita APA

Muller-Schwarze, D. (1977). Evolution of play behaviour.

Chicago Edition Citation

Muller-Schwarze, Dietland. Evolution of Play Behaviour. Dowden, Hutchinson & Ross, Inc., Stroudsburg, 1977.

Cita MLA

Muller-Schwarze, Dietland. Evolution of Play Behaviour. 1977.

Atenció: Aquestes cites poden no estar 100% correctes.