Monica Hughes[著]. (2017). The ugly duckling. 湖北少年儿童出版社.
Chicago Style aipamenaMonica Hughes[著]. The Ugly Duckling. 湖北少年儿童出版社, 2017.
MLA aipamenaMonica Hughes[著]. The Ugly Duckling. 湖北少年儿童出版社, 2017.
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