SEARS, F. W., ZEMANSKY, M. W., & YOUNG, H. D. (1981). University physics part 1.-- Ed.6. Addison-Wesley Pub.

SEARS, Francis W., Mark W. ZEMANSKY, and Hugh D. YOUNG. University Physics Part 1.-- Ed.6. Reading: Addison-Wesley Pub, 1981.

SEARS, Francis W., et al. University Physics Part 1.-- Ed.6. Addison-Wesley Pub, 1981.