Cita APA (7a ed.)

Clark, R. W. (1971). Einstein: The life and times. The World Publishing Company.

Cita Chicago Style (17a ed.)

Clark, Ronald William. Einstein: The Life and Times. New York ; Cleveland: The World Publishing Company, 1971.

Cita MLA (9a ed.)

Clark, Ronald William. Einstein: The Life and Times. The World Publishing Company, 1971.