APA (7th ed.) Citation

Williams, T. I. (1974). A Biographical dictionary of scientists (2nd ed.). Black.

Chicago Style (17th ed.) Citation

Williams, Trevor I. A Biographical Dictionary of Scientists. 2nd ed. London [England]: Black, 1974.

MLA (8th ed.) Citation

Williams, Trevor I. A Biographical Dictionary of Scientists. 2nd ed. Black, 1974.