Gaya APA
Kovacs, Karen. (2011).
Speaking for IELTS (1st edition).
London:
HarperCollins.
Gaya Chicago
Kovacs, Karen.
Speaking for IELTS.
1st edition
London:
HarperCollins,
2011.
Buku.
Gaya MLA
Kovacs, Karen.
Speaking for IELTS.
1st edition
London:
HarperCollins,
2011.
Buku.
Gaya Turabian
Kovacs, Karen.
Speaking for IELTS.
1st edition
London:
HarperCollins,
2011.
Buku.