Gaya APA
PENYUSUN, T. (1979).
Encyclopedia Britannica Propaedia Outline of Knowledge 1979 .
CHICAGO:
Encylopedia Britannica.
Gaya MLA
PENYUSUN, TIM.
"Encyclopedia Britannica Propaedia Outline of Knowledge 1979".
CHICAGO:
Encylopedia Britannica,
1979.
Text.