Gaya APA

INCORPORATED, R, G. (1971). THE NEW BOOK OF KNOWLADGE JILID 12 (-). NEW YORK: GROLIER INCORPORATED.

Gaya MLA

INCORPORATED, REDAKSI, GROLIER. "THE NEW BOOK OF KNOWLADGE JILID 12". - NEW YORK: GROLIER INCORPORATED, 1971. Text.