Childs, G. W. (1868). The Public Ledger Building, Philadelphia: With an account of the proceedings connected with its opening June 20, 1867. G.W. Childs.
Lua i Stíl Chicago (17ú heag.)Childs, George William. The Public Ledger Building, Philadelphia: With an Account of the Proceedings Connected with Its Opening June 20, 1867. Philadelphia: G.W. Childs, 1868.
Lua MLA (8ú heag.)Childs, George William. The Public Ledger Building, Philadelphia: With an Account of the Proceedings Connected with Its Opening June 20, 1867. G.W. Childs, 1868.
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