APA-viite (7. p.)
ebrary, Inc, & Akhtar, M. C. (2011). Play and playfulness: Developmental, cultural, and clinical aspects. Jason Aronson.
Chicago-viite (17. p.)
ebrary, Inc, ja Monisha C. Akhtar. Play and Playfulness: Developmental, Cultural, and Clinical Aspects. Lanham, Md.: Jason Aronson, 2011.
MLA-viite (9. p.)
ebrary, Inc, ja Monisha C. Akhtar. Play and Playfulness: Developmental, Cultural, and Clinical Aspects. Jason Aronson, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.