- Thompson , L.M. The Unification of South Africa 1902–1910 120 – 123 .
- Garson , N.G. October 1969 . “ Party politics and the plural society: South Africa 1910–1929 ” . In Institute of Commonwealth Studies , October , 128 – 128 . University of London . April 1970
- Vgl. Thompson L.M. Unification … 460 470
- Volksraad . 23/11/1910 . Debatten kol. 251. Die wetsontwerp is gepubliseer in Union Government Gazette Extraordinary, 11/11/1910 (Government Notice No. 895 of 1910), pp. xiii–xxi.
- Vgl. Grobler J.C.H. Die vroeë politieke loopbaan van P.G.W. Grobler 1896–1916 (ongepubliseerde D.Litt. et Phil.-proefskrif, Unisa, 1979) vir meer besonderhede oor dié politikus.
- 23/11/1910 . Debatten kol. 250–251.
- 4/12/1910 . A. 787 G.S. Preller-versameling, (T.A.B.) , Vol. 256 , 12 – 12 . P. Grobler-Preller .
- 23/11/1910 . Debatten kol. 251.
- 30/11/1910 . Debatten kol. 422–424; De Volkstem, 2/12/1910.
- 30/11/1910 . “ House of Assembly ” . In Debates col. 427–429.
- Suid-Afrikaanse biografiese woordeboek 575 – 576 . dl. IV
- 30/11/1910 . Debates col. 429–435.
- 30/11/1910 . Debatten kol. 432–433.
- 30/11/1910 . Debates col. 437–441.
- 30/11/1910 . Debates col. 441–442.
- 30/11/1910 . Debates col. 442–443.
- 30/11/1910 . Debates col. 443–444.
- 30/11/1910 . Debates col. 441.
- 6/12/1910 . The Star
- 2/12/1910 . Debatten kol. 470.
- Grobler , P. and Preller , G.S. 4/12/1910 . A. 787 G.S. Preller-vers., (T.A.B.) Vol. 256 , 10 – 16 .
- 6/12/1910 . The Star
- Hahlo , Sien H.R. The South African law of husband and wife 13 – 13 . en nt. 84.
- Thompson , L.M. Unification … 218 – 218 .
- Walshe , P. The rise of African nationalism in South Africa 15 – 15 .
- 22/4/1912 . A. 140 F.V. Engelenburg-vers. (T.A.B.) Vol. 2 , 26 – 27 . Lêer 17: L. Botha — F.V. Engelenburg
- 6/12/1910 . The Star Brief aan die Cape Times is deur The Star oorgeneem.
- 15/5/1913 . De Volkstem A. 140 F.V. Engelenburg-vers. (T.A.B.), Band 5, lêer 17: Engelenburg-P. Grobler, 22/2/1911, p. 77. Sien ook De Volkstem, 9/12/1910, 23/12/1910, 24/2/1911 en 7/3/1911.
- Plaatje , Sol T. 1982 . Native life in South Africa 389 – 390 . uitgawe
- Plaatje , Sol T. Native life … 158 – 158 .
- 27/12/1910 . S.A. native opinion
- 5/12/1910 . The Star en 6/12/1910.
- November–Desember 1910 . Die Kerkbode November–Desember ,
- 9/12/1910 . De Volkstem 13/12/1910.
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