Gaya APA
Alexander, L. (1993).
Developing Skills : An Integrated Course fo Intermaediate Students .
Yogyakarta:
Penerbit Kanisius.
Gaya MLA
Alexander, L.G..
"Developing Skills : An Integrated Course fo Intermaediate Students".
Yogyakarta:
Penerbit Kanisius,
1993.
Text.