APA (7th ed.) Citation

Porter, Grant, & Draper. (1985). Communicating effectively in english: Oral communication for non-native speakers. Wadsworth Publishing Company.

Chicago Style (17th ed.) Citation

Porter, Grant, and Draper. Communicating Effectively in English: Oral Communication for Non-native Speakers. California: Wadsworth Publishing Company, 1985.

MLA (8th ed.) Citation

Porter, et al. Communicating Effectively in English: Oral Communication for Non-native Speakers. Wadsworth Publishing Company, 1985.