Citazione Stile APA (7a Edizione)

Cook, H. C. (1917). The play way: An essay in educational method (2nd ed.). W. Heinemann.

Citazione stile Chigago Style (17a edizione)

Cook, H. Caldwell. The Play Way: An Essay in Educational Method. 2nd ed. London: W. Heinemann, 1917.

Citatione MLA (8a ed.)

Cook, H. Caldwell. The Play Way: An Essay in Educational Method. 2nd ed. W. Heinemann, 1917.