APA (7th ed.) Citation

Vik, G. N., Wilkinson, C. W., & Wilkinson, D. C. (1990). Writing and speaking in business (10th ed.). Irwin.

Chicago Style (17th ed.) Citation

Vik, Gretchen N., Clyde W. Wilkinson, and Dorothy C. Wilkinson. Writing and Speaking in Business. 10th ed. Homewood, Ill: Irwin, 1990.

MLA (9th ed.) Citation

Vik, Gretchen N., et al. Writing and Speaking in Business. 10th ed. Irwin, 1990.