Gaya APA
Sipri, .
(2012).
Sipri Yearbook 2012 : Armaments, Disarmament and International Security
(
1)
.
Sweden:
Sipri.
Gaya MLA
Sipri, .
"Sipri Yearbook 2012 : Armaments, Disarmament and International Security".
1
Sweden:
Sipri,
2012.
print.