"I bring you printouts from amazon.com, and also Barnes and Noble, and the publisher. Is this okay?"
"Yep - that gives me everything I need!"
"Are you sure?"
"Absolutely."
*laugh* I ask for title, author, publisher, and ISBN. All I really need, ultimately, is the ISBN; easy to order just based on that. But he's fussy in a cute way.
*stretch* Is it naptime yet?