Gaya APA
A question of maths: Substraction. (2005).
London:
Brown Reference Group.
Gaya Chicago
A question of maths: Substraction.
.
London:
Brown Reference Group,
2005.
Buku.
Gaya MLA
A question of maths: Substraction.
.
London:
Brown Reference Group,
2005.
Buku.
Gaya Turabian
A question of maths: Substraction.
London:
Brown Reference Group,
2005.
Buku.