APA (7th ed.) Citation

Stewart, M. M., Clark, L., & Zimmer, K. (1984). Business English and communication (6th ed.). National Book Store.

Chicago Style (17th ed.) Citation

Stewart, Marie M., Lyn Clark, and Kenneth Zimmer. Business English and Communication. 6th ed. Manila: National Book Store, 1984.

MLA (9th ed.) Citation

Stewart, Marie M., et al. Business English and Communication. 6th ed. National Book Store, 1984.