APA Citatie

Porter, P. A. (1992). Communicating effectively in English: Oral communication for non-native speakers. Boston, MA: Heinle & Heinle.

Chicago Style citaat

Porter, Patricia A. Communicating Effectively in English: Oral Communication for Non-native Speakers. Boston, MA: Heinle & Heinle, 1992.

MLA citatie

Porter, Patricia A. Communicating Effectively in English: Oral Communication for Non-native Speakers. Boston, MA: Heinle & Heinle, 1992.

Let op: Deze citaties zijn niet altijd 100% accuraat.