Dyfyniad APA

Ferguson, K. (1992). Stephen Hawking: Quest for a theory of everying. Bantam.

Dyfyniad Arddull Chicago

Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everying. Toronto: Bantam, 1992.

Dyfyniad MLA

Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everying. Bantam, 1992.

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