Gaya APA
Widdowson, H, G.
(1980).
Reading and thinking in English: exploring functions
.
Hongkong:
Hongkong: Hing Yip.
Gaya MLA
Widdowson, H., G..
"Reading and thinking in English: exploring functions".
Hongkong:
Hongkong: Hing Yip,
1980.
Text.