Cita APA (7th ed.)

Clark, R. W. (1971). Einstein: The life and times. World Pub. Co.

Cita Chicago (17th ed.)

Clark, Ronald William. Einstein: The Life and Times. New York: World Pub. Co, 1971.

Cita MLA (9th ed.)

Clark, Ronald William. Einstein: The Life and Times. World Pub. Co, 1971.