Waddell, M., & Benson, P. (1992). Owl babies. Candlewick Press.
Lua i Stíl Chicago (17ú heag.)Waddell, Martin, agus Patrick Benson. Owl Babies. Cambridge, Mass.: Candlewick Press, 1992.
Lua MLA (8ú heag.)Waddell, Martin, agus Patrick Benson. Owl Babies. Candlewick Press, 1992.
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