INGWE, Richard. CROWDSOURCING-BASED GEOINFORMATION, DISADVANTAGED URBANISATION CHALLENGES, SUBSAHARAN AFRICA: THEORETICAL PERSPECTIVES AND NOTES. Quaestiones Geographicae, [S. l.], v. 36, n. 1, p. 5–14, 2017. DOI: 10.2478/quageo-2017-0001. Disponível em: https://pressto.amu.edu.pl/index.php/qg/article/view/8025. Acesso em: 28 mar. 2024.