Gaya APA
Austen, E. (1980).
Signpost: A Foundation English Course, Course book 1 (cet 2).
Hongkong:
Thomas Nelson and sons.
Gaya MLA
Austen, Edward.
"Signpost: A Foundation English Course, Course book 1".
cet 2
Hongkong:
Thomas Nelson and sons,
1980.
Text.