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Lua i Stíl Chicago (17ú heag.)Breidenbach, Tom. "A Tree Grows in SoHo: Alex Katz's "Blue", 1998." Artforum 1998.
Lua MLA (8ú heag.)Breidenbach, Tom. "A Tree Grows in SoHo: Alex Katz's "Blue", 1998." Artforum, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.