Gaya APA
Ensyclopedia Britannica A New Survey of Universal Konowledge vol 20. (sa).
London:
Encyclopedia Britanica.
Gaya Chicago
Ensyclopedia Britannica A New Survey of Universal Konowledge vol 20.
.
London:
Encyclopedia Britanica,
sa.
Reference.
Gaya MLA
Ensyclopedia Britannica A New Survey of Universal Konowledge vol 20.
.
London:
Encyclopedia Britanica,
sa.
Reference.
Gaya Turabian
Ensyclopedia Britannica A New Survey of Universal Konowledge vol 20.
London:
Encyclopedia Britanica,
sa.
Reference.