APA (7th ed.) Citation

O'Neill, H. (1934). The hardness of metals and its measurement. Chapman & Hall.

Chicago Style (17th ed.) Citation

O'Neill, Hugh. The Hardness of Metals and Its Measurement. London: Chapman & Hall, 1934.

MLA (9th ed.) Citation

O'Neill, Hugh. The Hardness of Metals and Its Measurement. Chapman & Hall, 1934.