Ur, P. (1992). Five - Minute activities: A resource book of short activities. Cambridge: Cambridge University Press.
Chicago Style aipamenaUr, Penny. Five - Minute Activities: A Resource Book of Short Activities. Cambridge: Cambridge University Press, 1992.
MLA aipamenaUr, Penny. Five - Minute Activities: A Resource Book of Short Activities. Cambridge: Cambridge University Press, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.