APA (7th ed.) Citation

O'Keefe, J. A. (1993). The law of weights and measures (2nd ed.). Butterworths.

Chicago Style (17th ed.) Citation

O'Keefe, John A. The Law of Weights and Measures. 2nd ed. London: Butterworths, 1993.

MLA (9th ed.) Citation

O'Keefe, John A. The Law of Weights and Measures. 2nd ed. Butterworths, 1993.