APA (7th ed.) Citation

Colum, P. (1957). The flying swans. [publisher not identified].

Chicago Style (17th ed.) Citation

Colum, Padraic. The Flying Swans. New York, Crown Publishers: [publisher not identified], 1957.

MLA (9th ed.) Citation

Colum, Padraic. The Flying Swans. [publisher not identified], 1957.