Howland, W. (1851). Phoebe, or, the Hospital. General Protestant Episcopal Sunday School Union.
Lua i Stíl Chicago (17ú heag.)Howland, William. Phoebe, or, the Hospital. New York: General Protestant Episcopal Sunday School Union, 1851.
Lua MLA (8ú heag.)Howland, William. Phoebe, or, the Hospital. General Protestant Episcopal Sunday School Union, 1851.
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