PULLEIN CHRISTINE. (2019). THE MYSTERY OF SPITEFUL LETTERS (2014 Ed.). EGMONT BOOK PUBLISHERS LTD.
Chicagoスタイル(17版)引用形式PULLEIN CHRISTINE. THE MYSTERY OF SPITEFUL LETTERS. 2014 Ed. LONDON: EGMONT BOOK PUBLISHERS LTD, 2019.
MLA(9版)引用形式PULLEIN CHRISTINE. THE MYSTERY OF SPITEFUL LETTERS. 2014 Ed. EGMONT BOOK PUBLISHERS LTD, 2019.
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