Gaya APA
Peck, G, A, &, T. (1999).
101 helpful hints for IELTS : academic module .
Australia:
Adams & Austen Press Pty. Ltd.
Gaya MLA
Peck, Garry, Adams, &, Terry.
"101 helpful hints for IELTS : academic module".
Australia:
Adams & Austen Press Pty. Ltd,
1999.
Text.