Dyfyniad APA

The University of Chicago. (1948). Encyclopaedia Britannica 18: A new survey of universal knowledge. Encyclopaedia Britannica.

Dyfyniad Arddull Chicago

The University of Chicago. Encyclopaedia Britannica 18: A New Survey of Universal Knowledge. Chicago: Encyclopaedia Britannica, 1948.

Dyfyniad MLA

The University of Chicago. Encyclopaedia Britannica 18: A New Survey of Universal Knowledge. Encyclopaedia Britannica, 1948.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.