Seely, J. (2013). Oxford A-Z of grammar and punctuation (Rev. 2nd ed.). Oxford University Press.
Cita Chicago (17th ed.)Seely, John. Oxford A-Z of Grammar and Punctuation. Rev. 2nd ed. Oxford: Oxford University Press, 2013.
Cita MLA (9th ed.)Seely, John. Oxford A-Z of Grammar and Punctuation. Rev. 2nd ed. Oxford University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.