APA (7th ed.) Citation

Letton, J. D., & Letton, F. (1957). The Robsart Affair. Muller.

Chicago Style (17th ed.) Citation

Letton, Jennette Dowling, and Francis Letton. The Robsart Affair. London: Muller, 1957.

MLA (8th ed.) Citation

Letton, Jennette Dowling, and Francis Letton. The Robsart Affair. Muller, 1957.

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