Citazione Stile APA (7a Edizione)

Ryan, K., & Canfield, J. (1970). Don't smile until Christmas: Accounts of the first year of teaching. University of Chicago Press.

Citazione stile Chigago Style (17a edizione)

Ryan, Kevin, e John Canfield. Don't Smile Until Christmas: Accounts of the First Year of Teaching. Chicago: University of Chicago Press, 1970.

Citatione MLA (8a ed.)

Ryan, Kevin, e John Canfield. Don't Smile Until Christmas: Accounts of the First Year of Teaching. University of Chicago Press, 1970.