This is the official one. Shogakukan's Wonder Life Special line is Nintendo's own official guidebook series in Japan, and this volume is its Twilight Princess entry: the complete walkthrough of the Wii version, published weeks after the game's Japanese launch.
It is also the book that proves a famous oddity. Japan received four Twilight Princess guides in 2007, every one of them branded for the Wii, and no GameCube guide was ever published there, because the GameCube version of the game was sold only through Nintendo's online store in Japan. The separate GameCube guide collectors know is an American Prima edition.