APA (7th ed.) Citation

Swindells, R. E. (1993). Hydra. Yearling Books.

Chicago Style (17th ed.) Citation

Swindells, Robert E. Hydra. London: Yearling Books, 1993.

MLA (9th ed.) Citation

Swindells, Robert E. Hydra. Yearling Books, 1993.

Warning: These citations may not always be 100% accurate.