APA (7th ed.) Citation

National Book League (Great Britain) & Linder, L. (1966). Beatrix Potter, 1866-1943: Centenary catalogue, 1966. National Book League.

Chicago Style (17th ed.) Citation

National Book League (Great Britain) and Leslie Linder. Beatrix Potter, 1866-1943: Centenary Catalogue, 1966. London: National Book League, 1966.

MLA (9th ed.) Citation

National Book League (Great Britain) and Leslie Linder. Beatrix Potter, 1866-1943: Centenary Catalogue, 1966. National Book League, 1966.