APA (7th ed.) Citation

(1963). The Dictionary of National Biography: Twenthieth Century (7. Aufl.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

The Dictionary of National Biography: Twenthieth Century. 7. Aufl. Oxford: Oxford Univ. Press, 1963.

MLA (8th ed.) Citation

The Dictionary of National Biography: Twenthieth Century. 7. Aufl. Oxford Univ. Press, 1963.