Gaya APA
Anonim, . (1971).
The World of Science [Vol. 6]: Earth Science [3] the Arrival of Man (Cet. 1.--).
Chicago:
Creative World.
Gaya MLA
Anonim, .
"The World of Science [Vol. 6]: Earth Science [3] the Arrival of Man".
Cet. 1.--
Chicago:
Creative World,
1971.
Text.