Dyfyniad APA

Ferguson, K. (1991). Stephen Hawking: Quest for a theory of everything. Bantam.

Dyfyniad Arddull Chicago

Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Toronto: Bantam, 1991.

Dyfyniad MLA

Ferguson, Kitty. Stephen Hawking: Quest for a Theory of Everything. Bantam, 1991.

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