Sjoerd Hofstra (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sjoerd Hofstra" in English language version.

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ascleiden.nl

"Archival Collection Sjoerd Hofstra". www.ascleiden.nl. African Studies Centre Leiden. 8 February 2022. Retrieved 3 March 2022.

Gijswijt-Hofstra, M. (October 15, 2014). "Among the Mende in Sierra Leone: the letters from Sjoerd Hofstra (1934-36)". African Studies Centre. hdl:1887/24890. Retrieved 3 March 2022 – via scholarlypublications.universiteitleiden.nl.

Noordegraaf, H. (November 12, 2013). "Hofstra, Sjoerd (1898-1983)". resources.huygens.knaw.nl (in Dutch). Retrieved 3 March 2022.

"Sjoerd Hofstra". dwc.knaw.nl. Digitaal Wetenschapshistorisch Centrum. 19 January 2017. Retrieved 3 March 2022.

de Vries, Geert. "Portretten ereleden Sjoerd Hofstra". www.nsv-sociologie.nl (in Dutch). Nederlandse Sociologische Vereniging. Retrieved 3 March 2022.

"Hofstra, S. (Sjoerd), 1898-1983". archives.uba.uva.nl (in Dutch). Allard Pierson - The Collections of the University of Amsterdam. Retrieved 3 March 2022.