Warriors 6-Book Collection with Bonus Book: Enter the Clans

From Author Wars - https://authorwars.com/books/warriors-6-book-collection-with-bonus-book-enter-the-clans-1945756.html

Overview:

Title: Warriors 6-Book Collection with Bonus Book: Enter the Clans
Author: Kate Cary Cherith Baldry Tui T. Sutherland
Year: 2015
Type: Omnibuses
Series: Erin Hunter's Warriors Universe

Variant Titles:

2015. Warriors 6-Book Collection with Bonus Book: Enter the Clans