9781440840463 (set : alkaline paper : hardcover)
1440840466 (set : alkaline paper : hardcover)
9781440847349 (volume 1 : alkaline paper : hardcover)
1440847347 (volume 1 : alkaline paper : hardcover)
9781440847356 (volume 2 : alkaline paper : hardcover)
1440847355 (vol 2 : alkaline paper : hardcover)
9781440840470 (electronic book)