Cita APA (7th ed.)
Hollister, C. W., & Hardy, J. D. (1975). River through time: The course of Western civilization. John Wiley & Sons.
Cita Chicago (17th ed.)
Hollister, C. Warren, i James D. Hardy. River Through Time: The Course of Western Civilization. New York: John Wiley & Sons, 1975.
Cita MLA (9th ed.)
Hollister, C. Warren, i James D. Hardy. River Through Time: The Course of Western Civilization. John Wiley & Sons, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.