Gaya APA

Ferrer, J., Whalley, E. (1990). Mosaic II : A Listening/Speaking Skills Book (ed. 2). Singapore: McGrawe-Hill.

Gaya MLA

Ferrer, Jami., Whalley, Elizabeth. "Mosaic II : A Listening/Speaking Skills Book". ed. 2 Singapore: McGrawe-Hill, 1990. Text.