Cita APA (7a ed.)

Summey, G. (1919). Modern punctuation. Its utilities and conventions. Oxford University Press.

Cita Chicago Style (17a ed.)

Summey, George. Modern Punctuation. Its Utilities and Conventions. New York: Oxford University Press, 1919.

Cita MLA (9a ed.)

Summey, George. Modern Punctuation. Its Utilities and Conventions. Oxford University Press, 1919.