Buruck, J. A., Hodapp, R. M., & Zigler, E. Handbook of mental retardation and development.
Chicago Style aipamenaBuruck, Jacob A., Robert M. Hodapp, and Edward Zigler. Handbook of Mental Retardation and Development. Cambridge, Cambridge University Press.
MLA aipamenaBuruck, Jacob A., et al. Handbook of Mental Retardation and Development.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.