APA (7th ed.) Citation

Clark. (1971). Monograph of shallow-water Indo-West Pacific echinoderms. Trustees of the British Museum (Natural History).

Chicago Style (17th ed.) Citation

Clark. Monograph of Shallow-water Indo-West Pacific Echinoderms. London: Trustees of the British Museum (Natural History), 1971.

MLA (9th ed.) Citation

Clark. Monograph of Shallow-water Indo-West Pacific Echinoderms. Trustees of the British Museum (Natural History), 1971.