Ryan, K., & Canfield, J. (1970). Don't smile until Christmas: Accounts of the first year of teaching. University of Chicago Press.
Citace podle Chicago (17th ed.)Ryan, Kevin, a John Canfield. Don't Smile Until Christmas: Accounts of the First Year of Teaching. Chicago: University of Chicago Press, 1970.
Citace podle MLA (8th ed.)Ryan, Kevin, a John Canfield. Don't Smile Until Christmas: Accounts of the First Year of Teaching. University of Chicago Press, 1970.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..