Gaya APA

Alexander,L.G., . (1984). Developing Skills: New Concept English: An Integrated Course For Intermediate Student (Cet. 8). London: Longman.

Gaya MLA

Alexander,L.G., . "Developing Skills: New Concept English: An Integrated Course For Intermediate Student". Cet. 8 London: Longman, 1984. .