Cita APA (7th ed.)

Rifkin, J. (1987). Time wars: The primary conflict in human history. Holt.

Cita Chicago (17th ed.)

Rifkin, Jeremy. Time Wars: The Primary Conflict in Human History. New York: Holt, 1987.

Cita MLA (8th ed.)

Rifkin, Jeremy. Time Wars: The Primary Conflict in Human History. Holt, 1987.