Cita APA (7th ed.)

HILL, L. (1985). A guide to correct english.-- ed.2. Oxford University Press.

Cita Chicago (17th ed.)

HILL, L.A. A Guide to Correct English.-- Ed.2. Singapore: Oxford University Press, 1985.

Cita MLA (9th ed.)

HILL, L.A. A Guide to Correct English.-- Ed.2. Oxford University Press, 1985.