Cohen David & Wels, S. (1992). America: Then & now: great old photographs of america's life and times-and how those same scenes look today. Cohen Publishers.
Chicago-viite (17. p.)Cohen David ja Susan Wels. America: Then & Now: Great Old Photographs of America's Life and Times-and How Those Same Scenes Look Today. San Francisco: Cohen Publishers, 1992.
MLA-viite (9. p.)Cohen David ja Susan Wels. America: Then & Now: Great Old Photographs of America's Life and Times-and How Those Same Scenes Look Today. Cohen Publishers, 1992.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.