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