Gaya APA
Robbins, J., MacNeill, A.
(2001).
Impact Series : Impact ! Listening 2
.
Hong Kong:
Longman Asia ELT.
Gaya MLA
Robbins, Jill., MacNeill, Andrew.
"Impact Series : Impact ! Listening 2".
Hong Kong:
Longman Asia ELT,
2001.
Text.