David, T. J., & Osborne, C. M. (1976). Scalp hair patterns in mental subnormality.
Dyfyniad Arddull ChicagoDavid, T J., and C M. Osborne. Scalp Hair Patterns in Mental Subnormality. 1976.
Dyfyniad MLADavid, T J., and C M. Osborne. Scalp Hair Patterns in Mental Subnormality. 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.