Dyfyniad APA

Russell, B. (1948). Human knowledge: Its scope and limits. London: Allen and Unwin.

Dyfyniad Arddull Chicago

Russell, Bertrand. Human Knowledge: Its Scope and Limits. London: Allen and Unwin, 1948.

Dyfyniad MLA

Russell, Bertrand. Human Knowledge: Its Scope and Limits. London: Allen and Unwin, 1948.

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