Cita APA

Ark, L. v. d., Ligtvoet, R., Marvelde, J. M. t., & Sijtsma, K. Investigating an invariant item ordering for polytomously scored items.

Chicago Style Citation

Ark, L.Andries van der., Rudy Ligtvoet, Janneke M. te Marvelde, i Klaas Sijtsma. Investigating an Invariant Item Ordering for Polytomously Scored Items.

Cita MLA

Ark, L.Andries van der., Rudy Ligtvoet, Janneke M. te Marvelde, i Klaas Sijtsma. Investigating an Invariant Item Ordering for Polytomously Scored Items.