Cita APA (7th ed.)
Grieshaber, S. J., & McArdle, F. (2010). The trouble with play. Open University Press.
Cita Chicago (17th ed.)
Grieshaber, Susan Jane, i Felicity McArdle. The Trouble with Play. Berkshire, England: Open University Press, 2010.
Cita MLA (9th ed.)
Grieshaber, Susan Jane, i Felicity McArdle. The Trouble with Play. Open University Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.