Gifford, D. (2013). American holiday postcards, 1905-1915: Imagery and context. McFarland & Co., Inc., Publishers.
Lua i Stíl Chicago (17ú heag.)Gifford, Daniel. American Holiday Postcards, 1905-1915: Imagery and Context. Jefferson, N.C.: McFarland & Co., Inc., Publishers, 2013.
Lua MLA (9ú heag.)Gifford, Daniel. American Holiday Postcards, 1905-1915: Imagery and Context. McFarland & Co., Inc., Publishers, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.