Sears, F. W., & Zemansky, M. W. (1971). University Physics (4th ed.). Addison-Wesley.
Cita Chicago (17th ed.)Sears, Francis Weston, i Mark W. Zemansky. University Physics. 4th ed. London: Addison-Wesley, 1971.
Cita MLA (9th ed.)Sears, Francis Weston, i Mark W. Zemansky. University Physics. 4th ed. Addison-Wesley, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.