Gaya APA
Loon, D, O, &, B, V.
(2011).
Economics A Graphic Guide
(
Cetakan Pertama)
.
:
Icon Books.
Gaya MLA
Loon, David, Orrel, &, Borin, Van.
"Economics A Graphic Guide".
Cetakan Pertama
:
Icon Books,
2011.
Text.