APA (7th ed.) Citation

Picton, B. E. (1993). A field guide to the shallow-water echinoderms of the British Isles. Immel.

Chicago Style (17th ed.) Citation

Picton, Bernard E. A Field Guide to the Shallow-water Echinoderms of the British Isles. London: Immel, 1993.

MLA (9th ed.) Citation

Picton, Bernard E. A Field Guide to the Shallow-water Echinoderms of the British Isles. Immel, 1993.