Abbott, J. (1850). Rollo learning to read (A new ed.). Hogan & Thompson ; Gould, Kendall & Lincoln.
Lua i Stíl Chicago (17ú heag.)Abbott, Jacob. Rollo Learning to Read. A new ed. Philadelphia : Boston: Hogan & Thompson ; Gould, Kendall & Lincoln, 1850.
Lua MLA (8ú heag.)Abbott, Jacob. Rollo Learning to Read. A new ed. Hogan & Thompson ; Gould, Kendall & Lincoln, 1850.
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