Ai, Weiwei. Ai Weiwei speaks / with Hans Ulrich Obrist. - London : Penguin Books, 2011. - x, 110, [16] p. of col. plates : ill. (some col.) ; 18 cm. - Penguin special . - Penguin special. . ISBN: 9780241957547 (pbk.) Subjects--Personal Names: Ai, Weiwei--Interviews. Dewey Class. No.: 709.2 / AIW 2011