Gregg, R. N. (1983). The artist's studio in American painting: 1840 - 1983 ; Allentown Art Museum, September 25, 1983 - January 8, 1984 / organized by Richard N. Gregg. Allentown Art Museum.
Chicago-referens (17:e uppl.)Gregg, Richard N. The Artist's Studio in American Painting: 1840 - 1983 ; Allentown Art Museum, September 25, 1983 - January 8, 1984 / Organized by Richard N. Gregg. Allentown: Allentown Art Museum, 1983.
MLA-referens (8:e uppl.)Gregg, Richard N. The Artist's Studio in American Painting: 1840 - 1983 ; Allentown Art Museum, September 25, 1983 - January 8, 1984 / Organized by Richard N. Gregg. Allentown Art Museum, 1983.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.