Laros, J. A., & Tellegen, P. J. (1991). Construction and validation of the SON-R 5 1/2-17, the Snijders-Oomen non-verbal intelligence test. Wolters-Noordhoff.
Dyfyniad Arddull ChicagoLaros, J. A., and P. J. Tellegen. Construction and Validation of the SON-R 5 1/2-17, the Snijders-Oomen Non-verbal Intelligence Test. Groningen, Netherlands: Wolters-Noordhoff, 1991.
Dyfyniad MLALaros, J. A., and P. J. Tellegen. Construction and Validation of the SON-R 5 1/2-17, the Snijders-Oomen Non-verbal Intelligence Test. Wolters-Noordhoff, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.