\link{http://www.amazon.co.uk/exec/obidos/ASIN/0091887585/qid=1147687262/sr=1-1/ref=sr_1_2_1/026-6157592-6291613\here}
will admit I've never read any other TTC book though .. never felt I had to tbh
also point her in direction of www.fertilityfriend.com