Ngā kupu hautoa kōpae
Tohutoro APA (7th ed.)
Riga, A. (2007). Jan Floris de Jongh (1910 - 1988), President of IASSW 1954-1961. Social Work & Society.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoru Kātū Chicago (17th ed.)
Riga, Albert. Jan Floris De Jongh (1910 - 1988), President of IASSW 1954-1961. Social Work & Society, 2007.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Riga, Albert. Jan Floris De Jongh (1910 - 1988), President of IASSW 1954-1961. Social Work & Society, 2007.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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