Can't find version of audiobook

[Silvia]

I am listening to a version of this that I got from the library. However, the narrator is different from the ones that are listed in the GR editions I can find. The ISBN is not on GR, and the publisher (BBC Audio) no longer exists. So don't know if I should add it, or if it's one of the editions with no narrator listed, with an alternate ISBN.

http://www.worldcat.org/title/close-r...

[Renske]

If it has a different ISBN, it is a different edition, no matter how many similarities or differences there are with the other editions. So you can add it as a new edition.

[Silvia]

Thanks, will do.