http://www.shoogi.net/photo-book-smile/

How can I get a child to smile / laugh during a photo shoot?
Is there a book of photography out there specifically tells you how to make a child smile / laugh during a session?
I have a trick to make them smile, with only saying a word …. I tell them to say MONKEY'S !!!!!!!!!!! And voila, a nice smile.
Photobook Smile