Laura Ingalls Wilder. (1999). Sugar Snow (Little House Picture Book) (Revised ed.). HarperCollins.
Chicago-viite (17. p.)Laura Ingalls Wilder. Sugar Snow (Little House Picture Book). Revised ed. HarperCollins, 1999.
MLA-viite (9. p.)Laura Ingalls Wilder. Sugar Snow (Little House Picture Book). Revised ed. HarperCollins, 1999.
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