Dyfyniad APA

Hutchins, R. M. (1952). Great books of the Western World: Ptolemy, Copernicus, Kepler. Encyclopaedia Britannica.

Dyfyniad Arddull Chicago

Hutchins, Robert Maynard. Great Books of the Western World: Ptolemy, Copernicus, Kepler. Chicago: Encyclopaedia Britannica, 1952.

Dyfyniad MLA

Hutchins, Robert Maynard. Great Books of the Western World: Ptolemy, Copernicus, Kepler. Encyclopaedia Britannica, 1952.

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