APA (7th ed.) Citation

Clark, A. M. (1968). Starfishes and their relations (2d ed.). Trustees of the British Museum.

Chicago Style (17th ed.) Citation

Clark, Ailsa McGown. Starfishes and Their Relations. 2d ed. London: Trustees of the British Museum, 1968.

MLA (9th ed.) Citation

Clark, Ailsa McGown. Starfishes and Their Relations. 2d ed. Trustees of the British Museum, 1968.