Yerker, L. (2011). Fun work. Tata Mcgraw Hill.
Chicago Style aipamenaYerker, Leslie. Fun Work. New Delhi: Tata Mcgraw Hill, 2011.
MLA aipamenaYerker, Leslie. Fun Work. Tata Mcgraw Hill, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.