Harry Potter and the Cursed Child: Parts One and Two

Notes

Per the "About the Production" section in the back of the book, all three are listed as the authors of the original story: the play as such seems to have been written by Thorne and Tiffany; the two opening scenes were adapted from the epilogue of Harry Potter #7, however.

Date from Amazon.com as of 2016-06-02, copyright page states only "First edition, July 2016"
"Special Rehearsal Edition Script" on the cover
Spine, cover, title page, and the "About the Production" section all list all three, and the biographies in the back are listed as "Biographies of the Original Story Team" and list all three, so included Rowling in the authors.
$39.99 CAN
Cover artist not credited, front dust jacket flap has note at the bottom stating, "Jacket artwork and logo are trademarks of and © Harry Potter Theatrical Productions Limited"
First printing per number line: 10 9 8 7 6 5 4 3 2 1   16 17 18 19 20
"About the Production" on pp.311-319 lists cast and crew of the original theatrical production which premiered at the Palace Theatre in London, England on July 30, 2016.