APA (7th ed.) Citation

Royal Commonwealth Society. Library & Simpson, D. H. (1961). Biography catalogue of the Library of the Royal Commonwealth Society. Royal Commonwealth Society.

Chicago Style (17th ed.) Citation

Royal Commonwealth Society. Library and Donald Herbert Simpson. Biography Catalogue of the Library of the Royal Commonwealth Society. London: Royal Commonwealth Society, 1961.

MLA (9th ed.) Citation

Royal Commonwealth Society. Library and Donald Herbert Simpson. Biography Catalogue of the Library of the Royal Commonwealth Society. Royal Commonwealth Society, 1961.