Rettig, W. (1909). Leo Burgerstein und die Schulbankfrage.
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Tohutoru Kātū Chicago (17th ed.)
Rettig, W. Leo Burgerstein Und Die Schulbankfrage. Charlottenburg, 1909.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
Tohutoro MLA (9th ed.)
Rettig, W. Leo Burgerstein Und Die Schulbankfrage. 1909.
I tāruatia paitia ki te papatopenga
Kua rahua te tārua ki te papatopenga
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