Gaya APA
Hoiberg, D, H. (2011).
Encyclopedia britannica global edition vol. 6: centaurea coloman .
Malaysia:
Encyclopaedia Britannica, Inc..
Gaya MLA
Hoiberg, Dale, H..
"Encyclopedia britannica global edition vol. 6: centaurea coloman".
Malaysia:
Encyclopaedia Britannica, Inc.,
2011.
Equipment.