APA (7th ed.) Citation

Thwaite, A. (1963). The owl in the tree, poems. Oxford University Press.

Chicago Style (17th ed.) Citation

Thwaite, Anthony. The Owl in the Tree, Poems. London: Oxford University Press, 1963.

MLA (9th ed.) Citation

Thwaite, Anthony. The Owl in the Tree, Poems. Oxford University Press, 1963.