Kamecka-Antczak, Celina, et al. “Challenges for Research Involving People With Intellectual Disabilities. (Based on Own Research)”. Researching Disability. The Opportunities and Dangers of Theoretical and Methodological Assumptions in Disability Studies, edited by Grzegorz Całek et al., Lodz University Press, 2020, pp. 129-43, https://doi.org/10.18778/8142-757-9.09.