COVEN, W. (2012). HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. LITTLE SIMON.
Chicagoスタイル(17版)引用形式COVEN, WANDA. HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. NEW YORK: LITTLE SIMON, 2012.
MLA(9版)引用形式COVEN, WANDA. HEIDI HECKELBECK AND THE CHRISTMAS SURPRISE # 9. LITTLE SIMON, 2012.
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