Veldhuis, N. (1997). Elementary education at Nippur: The lists of trees and wooden objects. [s.n.].
Chicago-referens (17:e uppl.)Veldhuis, Niek. Elementary Education at Nippur: The Lists of Trees and Wooden Objects. Groningen: [s.n.], 1997.
MLA-referens (8:e uppl.)Veldhuis, Niek. Elementary Education at Nippur: The Lists of Trees and Wooden Objects. [s.n.], 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.