APA-viite (7. p.)
Porter, P. A., & Grant, M. (1992). Communicating Effectively In English: Oral Communication for Non-Native Speakers. Heinle & Heinle Publishers.
Chicago-viite (17. p.)
Porter, Patricia A., ja Margaret Grant. Communicating Effectively In English: Oral Communication for Non-Native Speakers. New Jersey: Heinle & Heinle Publishers, 1992.
MLA-viite (9. p.)
Porter, Patricia A., ja Margaret Grant. Communicating Effectively In English: Oral Communication for Non-Native Speakers. Heinle & Heinle Publishers, 1992.
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