The World of Robert Jordan's The Wheel of Time is a reference book for the bestselling Wheel of Time series of fantasy novels by Robert Jordan. It is published in the United States by Tor Books and in the UK by Orbit. The book was written primarily by Teresa Patterson based on detailed notes and maps provided by Robert Jordan, who also served as editor on the project. Jordan also contributed the full text of the entry The Strike on Shayol Ghul, which had previously appeared online a year or so earlier.