Dyfyniad APA

(1993). Chambers British biographies: The 20th century. Chambers.

Dyfyniad Arddull Chicago

Chambers British Biographies: The 20th Century. Edinburgh: Chambers, 1993.

Dyfyniad MLA

Chambers British Biographies: The 20th Century. Chambers, 1993.

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