APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.