Sears, F. W., Zemansky, M. W., Young, H. D., Zemansky, M. W., & Young, H. D. (1974). College physics (4th ed.). Reading, Mass.: Addison-Wesley Pub. Co..

Sears, Francis Weston, Mark Waldo Zemansky, Hugh D. Young, Mark W. Zemansky, and Hugh D. Young. College Physics. 4th ed. Reading, Mass.: Addison-Wesley Pub. Co., 1974.

Sears, Francis Weston, et al. College Physics. 4th ed. Reading, Mass.: Addison-Wesley Pub. Co., 1974.