APA (7th ed.) Citation

Lewis, W. C. M. (1920). A system of physical chemistry (3rd ed.). Longmans, Green.

Chicago Style (17th ed.) Citation

Lewis, William C. McC. A System of Physical Chemistry. 3rd ed. London: Longmans, Green, 1920.

MLA (9th ed.) Citation

Lewis, William C. McC. A System of Physical Chemistry. 3rd ed. Longmans, Green, 1920.