APA-viite (7. p.)

Sutton-Smith, B. (2001). The ambiguity of play (First edition 2001.). Harvard University Press.

Chicago-viite (17. p.)

Sutton-Smith, Brian. The Ambiguity of Play. First edition 2001. Cambridge, Mass. ; London: Harvard University Press, 2001.

MLA-viite (8. p.)

Sutton-Smith, Brian. The Ambiguity of Play. First edition 2001. Harvard University Press, 2001.