APA (7th ed.) Citation

Unwin, W. C., & Mellanby, A. L. (1927). The elements of machine design (New and rev. ed.). Longmans, Green and co. ltd..

Chicago Style (17th ed.) Citation

Unwin, William Cawthorne, and Alexander Lawson Mellanby. The Elements of Machine Design. New and rev. ed. London, ; New York [etc.]: Longmans, Green and co. ltd., 1927.

MLA (8th ed.) Citation

Unwin, William Cawthorne, and Alexander Lawson Mellanby. The Elements of Machine Design. New and rev. ed. Longmans, Green and co. ltd., 1927.