Been recommended "It takes two to talk" but there are 2 different ones -which one to get?

[olivo]

have been on Amazon but it comes up with 2 different ones by different authors. Toddler with expressive language delay - which one would help?

this one
www.amazon.co.uk/Takes-Two-Talk-Practical-Children/dp/0921145195/ref=sr_1_1?ie=UTF8&qid=1314809000&sr=8-1

But it's much cheaper here
www.winslow-cat.com/it-takes-two-to-talk.html

ah thanks lingle - will try the library first anyway but wasnt sure which one to ask for.