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^Woltjer, J. J. (2013). "BRUINSMA, Vitus Jacobus (1850-1916)". Biografisch Woordenboek van Nederland (in Dutch). Amsterdam: Huygens ING. Retrieved 27 January 2024.
^Mellink, Albert F. (1986). "BRUINSMA, Vitus Jacobus". Biografisch Woordenboek van het Socialisme en de Arbeidersbeweging in Nederland 1 (in Dutch). pp. 22–24.
^van Lier, Bas (2011). Van Bruinsma tot Renckens. De geschiedenis van de Vereniging tegen de Kwakzalverij in 16 voorzittersportretten (in Dutch). Amsterdam: Vereniging tegen de Kwakzalverij. pp. 11–19.
