Ebony, D. (2016). Otto Piene at Sperone Westwater. Art in America.
Chicago-Zitierstil (17. Ausg.)Ebony, David. "Otto Piene at Sperone Westwater." Art in America 2016.
MLA-Zitierstil (8. Ausg.)Ebony, David. "Otto Piene at Sperone Westwater." Art in America, 2016.
警告：这些引文格式不一定是100％准确.