Clause, B. T., & Hopper, E. (2012). Edward Hopper in Vermont. University Press of New England.
Lua i Stíl Chicago (17ú heag.)Clause, Bonnie T., agus Edward Hopper. Edward Hopper in Vermont. Hanover: University Press of New England, 2012.
Lua MLA (9ú heag.)Clause, Bonnie T., agus Edward Hopper. Edward Hopper in Vermont. University Press of New England, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.