Keyser, C. S. (1876). Fairmount Park and the International Exhibition at Philadelphia (Centennial ed.). Claxton, Remsen & Haffelfinger.
Chicago-referens (17:e uppl.)Keyser, Charles S. Fairmount Park and the International Exhibition at Philadelphia. Centennial ed. Philadelphia: Claxton, Remsen & Haffelfinger, 1876.
MLA-referens (8:e uppl.)Keyser, Charles S. Fairmount Park and the International Exhibition at Philadelphia. Centennial ed. Claxton, Remsen & Haffelfinger, 1876.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.