Gaya APA
Vol.17, G, E, O, K.
(1993).
Grolier encyclopedia of knowledge Vol.17 / Grolier Incorporated
.
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Gaya MLA
Vol.17, Grolier, Encyclopedia, Of, Knowledge.
"Grolier encyclopedia of knowledge Vol.17 / Grolier Incorporated".
:
,
1993.
Referensi.