APA

randall r., kearney d., . (200). The Ugly Duckling. london: ladybirds books.

Chicago

randall ronne, kearney david, . 200. The Ugly Duckling. london: ladybirds books.

Harvard

randall r., kearney d., . (200). The Ugly Duckling. london: ladybirds books.

MLA

randall ronne, kearney david, . The Ugly Duckling. london: ladybirds books. 200.