Gaya APA

A., P., Grant, M. (1992). Communicating effectively in english : Oral communication for non-native speakers (Second Ed.). Autralia: Heinle Cengage Learning.

Gaya MLA

A., Porter,Patricia., Grant, Margaret. "Communicating effectively in english : Oral communication for non-native speakers". Second Ed. Autralia: Heinle Cengage Learning, 1992. Textbook.