Gaya APA
30 Years of National Geographic Specials. (1994).
Jakarta:
Medialine Entertainment.
Gaya Chicago
30 Years of National Geographic Specials.
.
Jakarta:
Medialine Entertainment,
1994.
.
Gaya MLA
30 Years of National Geographic Specials.
.
Jakarta:
Medialine Entertainment,
1994.
.
Gaya Turabian
30 Years of National Geographic Specials.
Jakarta:
Medialine Entertainment,
1994.
.