Gaya APA

Fradiadakis, H, K. (1997). All Clear! Intro : Speaking, Listening, Expressions and Pronunciation in Context . USA: Cengage Heinle.

Gaya MLA

Fradiadakis, Helen, Kalkstein. "All Clear! Intro : Speaking, Listening, Expressions and Pronunciation in Context". USA: Cengage Heinle, 1997. Text.