Gaya APA
Alexander, L.
(1975).
New Concept English Developing Skills
(
Cet ke 1)
.
Yogyakarta:
Penerbit Kanisius.
Gaya MLA
Alexander, L.G.
"New Concept English Developing Skills".
Cet ke 1
Yogyakarta:
Penerbit Kanisius,
1975.
Text.