Why does everyone think that the book read in Date Night is called the Red Tent?

The book read during book club in Date Night, the movie with Tina Fey (Claire Foster) and Steve Carell (Phil Foster), is obviously called "And in the Morning we Walk with the Birds of Change". It is NOT called "The Red Tent" See for yourself: http://www.google.com/search?hl=en&q=and%20in%20the%20morning%20we%20walk%20with%20the%20birds%20of%20change%20&bav=on.2,or.r_gc.r_pw.&wrapid=tlif130247300075010&um=1&biw=1003&bih=446&ie=UTF-8&sa=N&tab=iw