APA (7th ed.) Citation

Birkett, N. B. (1972). Six great advocates. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Birkett, Norman Birkett. Six Great Advocates. Freeport, N.Y.: Books for Libraries Press, 1972.

MLA (9th ed.) Citation

Birkett, Norman Birkett. Six Great Advocates. Books for Libraries Press, 1972.

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