Gaya APA
Lubis, M.
(1983).
Grolier Academic Encyclopedia 5: Cit-Cz
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Danbury, Conn:
Grolier International.
Gaya MLA
Lubis, Mochtar.
"Grolier Academic Encyclopedia 5: Cit-Cz".
Danbury, Conn:
Grolier International,
1983.
Text.