APA (7th ed.) Citation

Withers, S., & Williams, T. I. (1982). A Biographical dictionary of scientists (3rd ed.). Black.

Chicago Style (17th ed.) Citation

Withers, Sonia, and Trevor Illtyd Williams. A Biographical Dictionary of Scientists. 3rd ed. London: Black, 1982.

MLA (9th ed.) Citation

Withers, Sonia, and Trevor Illtyd Williams. A Biographical Dictionary of Scientists. 3rd ed. Black, 1982.