著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Greyling, P. J","'N, vergelykende ondersoek na die skoolprestasies van vyf- en sesjarige skoolbeginners in st. III en IV = A comparative investigation of the school achievement of five and six year school beginners in their third and fourth school standards",,"Werkgemeenskap ter Bevordering van die Pedagogiek as Wetenskap, Fakulteit Opvoedkunde, Universiteit van Pretoria",1959,Opvoedkundige studies,,,,https://cir.nii.ac.jp/crid/1130282270403116928