London, J., & Remkiewicz, F. (2000). Froggy goes to bed. Viking.
Lua i Stíl Chicago (17ú heag.)London, Jonathan, agus Frank Remkiewicz. Froggy Goes to Bed. New York: Viking, 2000.
Lua MLA (8ú heag.)London, Jonathan, agus Frank Remkiewicz. Froggy Goes to Bed. Viking, 2000.
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