Gaya APA
Britanica illustrated science library: Birds. (2008).
Chicago:
Encyclopedia Britanica.
Gaya Chicago
Britanica illustrated science library: Birds.
.
Chicago:
Encyclopedia Britanica,
2008.
Reference.
Gaya MLA
Britanica illustrated science library: Birds.
.
Chicago:
Encyclopedia Britanica,
2008.
Reference.
Gaya Turabian
Britanica illustrated science library: Birds.
Chicago:
Encyclopedia Britanica,
2008.
Reference.