APA-viite (7. p.)
Yeo, A. (2006). Are you the king or are you the joker?: Play math for young children. World Scientific.
Chicago-viite (17. p.)
Yeo, Adrian. Are You the King or Are You the Joker?: Play Math for Young Children. Hackensack, N.J.: World Scientific, 2006.
MLA-viite (9. p.)
Yeo, Adrian. Are You the King or Are You the Joker?: Play Math for Young Children. World Scientific, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.