Cita APA (7th ed.)

Blake, R., & Nicolls, C. S. (1986). The Dictionary of National Biography: Twenthieth Century: Ed. by Lord [Robert] Blake and C[hristine] S[tephanie] Nicholls. Oxford Univ. Press.

Cita Chicago (17th ed.)

Blake, Robert, i Christine Stephanie Nicolls. The Dictionary of National Biography: Twenthieth Century: Ed. by Lord [Robert] Blake and C[hristine] S[tephanie] Nicholls. Oxford ; New York: Oxford Univ. Press, 1986.

Cita MLA (8th ed.)

Blake, Robert, i Christine Stephanie Nicolls. The Dictionary of National Biography: Twenthieth Century: Ed. by Lord [Robert] Blake and C[hristine] S[tephanie] Nicholls. Oxford Univ. Press, 1986.