APA

Cartwright S., Amery H., . (1990). Animal Poems. London: Usborne.

Chicago

Cartwright Stephen, Amery Heather, . 1990. Animal Poems. London: Usborne.

Harvard

Cartwright S., Amery H., . (1990). Animal Poems. London: Usborne.

MLA

Cartwright Stephen, Amery Heather, . Animal Poems. London: Usborne. 1990.