Cita APA (7th ed.)
Seely, J. (2009). Oxford a-z of grammar & punctuation. Oxford University Press.
Cita Chicago (17th ed.)
Seely, John. Oxford A-z of Grammar & Punctuation. New Delhi: Oxford University Press, 2009.
Cita MLA (9th ed.)
Seely, John. Oxford A-z of Grammar & Punctuation. Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.