APA (7th ed.) Citation
Speidel, R. E., Summers, R. S., & White, J. J. (1987). Sales: Teaching Materials (4. ed.). West Publ. Co.
Chicago Style (17th ed.) Citation
Speidel, Richard E., Robert S. Summers, and James J. White. Sales: Teaching Materials. 4. ed. St. Paul: West Publ. Co, 1987.
MLA (9th ed.) Citation
Speidel, Richard E., et al. Sales: Teaching Materials. 4. ed. West Publ. Co, 1987.
Warning: These citations may not always be 100% accurate.