Gaya APA
Button, John. (S.a).
Upper secondary comprehension practice passages .
Singapore:
Pearson Longman.
Gaya Chicago
Button, John.
Upper secondary comprehension practice passages.
Singapore:
Pearson Longman,
S.a.
Text.
Gaya MLA
Button, John.
Upper secondary comprehension practice passages.
Singapore:
Pearson Longman,
S.a.
Text.
Gaya Turabian
Button, John.
Upper secondary comprehension practice passages.
Singapore:
Pearson Longman,
S.a.
Print.