APA (7th ed.) Citation

Watkins, J. Karl Popper: A memoir. The American scholar, 205-219.

Chicago Style (17th ed.) Citation

Watkins, John. "Karl Popper: A Memoir." The American Scholar : 205-219.

MLA (8th ed.) Citation

Watkins, John. "Karl Popper: A Memoir." The American Scholar, , pp. 205-219.

Warning: These citations may not always be 100% accurate.