Book duplicate

[Anna]

I accidentally added a new book (I'm the author) before finishing adding all the details (https://www.goodreads.com/book/show/2...) and then added it again correctly (https://www.goodreads.com/book/show/2...).

How can I remove the one that was added by mistake (and assigned to the wrong author apparently)? Or can this two be combined into one entry? Whatever, as long as the one with all the details and cover and reviews remains and the other one is removed, not to confuse my readers.

Thanks!