Order of authors for Adaptation?

[Empress]

What is the order of authors when a book is adapted?

Should adaptations of the same book but by different authors be combined?

https://www.goodreads.com/search?utf8=%E2%9C%93&query=alice+in+wonderland+

[Paula]

Adaptor in primary position, ori

[rivka, Former Moderator]

Ellie [The Empress] wrote: "Should adaptations of the same book but by different authors be combined?"

No.

[Empress]

Thanks