Williams, P. W. (1991). Sig Alert: A project for Artforum by Pat Ward Williams. Artforum.
Chicago-Zitierstil (17. Ausg.)Williams, Pat Ward. "Sig Alert: A Project for Artforum by Pat Ward Williams." Artforum 1991.
MLA-Zitierstil (8. Ausg.)Williams, Pat Ward. "Sig Alert: A Project for Artforum by Pat Ward Williams." Artforum, 1991.
警告：這些引文格式不一定是100％准確.