Gaya APA
Tullis, Graham. (2000).
New Insight into business : workbook .
Inggris:
Longman.
Gaya Chicago
Tullis, Graham.
New Insight into business : workbook.
Inggris:
Longman,
2000.
Buku.
Gaya MLA
Tullis, Graham.
New Insight into business : workbook.
Inggris:
Longman,
2000.
Buku.
Gaya Turabian
Tullis, Graham.
New Insight into business : workbook.
Inggris:
Longman,
2000.
Buku.