Scheepstra, A.J.M., Nakken, H., & Pijl, S.J. (1999). Contacts with classmates: The social position of pupils with Down's syndrome in Dutch mainstream education. European Journal of Special Needs Education, 3, 212-220.
Pijl, S.J., & Scheepstra, A.J.M. (1998). Pioneering in integration: Pupils with Down syndrome attending regular education. In E A B de Graaf, A Vermeer, H S A Heymans & M.I.M. Schuurman (Eds.), Down syndrome behind the dykes. Research in the Netherlands (pp. 173-182). Amsterdam: VU University Press.
Scheepstra, A.J.M. (1998, June 23). Leerlingen met Downs syndroom in de basisschool. Rijksuniversiteit Groningen (149 pag.). (Groningen: Stichting Kinderstudies Groningen) (ISBN 90-71000-74-5). Prom./coprom.: Prof. dr. H. Nakken (ISBN 90-71000-74-5).