The Authorized Ender Companion

From Author Wars - https://authorwars.com/books/the-authorized-ender-companion-1017609.html

Overview:

Title: The Authorized Ender Companion
Author: Jake Black
Year: 2009
Type: Non-fiction

Editions/Publications:

Unknown. The Authorized Ender Companion (Unknown, Jake Black, Tor, ISBN-10: 9780765320629, $27.99, 429 pages, Hardcover, Non-fiction)
2011 . The Authorized Ender Companion (2011, Jake Black, Tor, ISBN-10: 9780765320636, $16.99, 429 pages, Trade Paperback, Non-fiction)