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Lua i Stíl Chicago (17ú heag.)Tworkov, Helen. "Spiritual Matters: Zen in American Art / Helen Tworkov." Negotiating Rapture : The Power of Art to Transform Lives ; [in Conjunction with the Exhibition of the Same Title at the Museum of Contemporary Art, Chicago, 21 June-20 October 1996].(1996) .
Lua MLA (8ú heag.)Tworkov, Helen. "Spiritual Matters: Zen in American Art / Helen Tworkov." Negotiating Rapture : The Power of Art to Transform Lives ; [in Conjunction with the Exhibition of the Same Title at the Museum of Contemporary Art, Chicago, 21 June-20 October 1996].(1996), .