Pilkey, D. (1995). The Hallo-wiener. Blue Sky Press.
Lua i Stíl Chicago (17ú heag.)Pilkey, Dav. The Hallo-wiener. New York: Blue Sky Press, 1995.
Lua MLA (8ú heag.)Pilkey, Dav. The Hallo-wiener. Blue Sky Press, 1995.
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