APA (7th ed.) Citation

Robertson, J. (1929). History of freethought in the Nineteenth Century. Kessinger.

Chicago Style (17th ed.) Citation

Robertson, J.M. History of Freethought in the Nineteenth Century. [U.K.]: Kessinger, 1929.

MLA (9th ed.) Citation

Robertson, J.M. History of Freethought in the Nineteenth Century. Kessinger, 1929.

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