Citazione Stile APA (7a Edizione)

Osborn, P. (1999). How grammar works: A self-teaching guide. John Wiley.

Citazione stile Chigago Style (17a edizione)

Osborn, Patricia. How Grammar Works: A Self-teaching Guide. New York: John Wiley, 1999.

Citatione MLA (9a ed.)

Osborn, Patricia. How Grammar Works: A Self-teaching Guide. John Wiley, 1999.