1. Aarts, O. (2010). Religious diversity and religious involvement: A Study of religious markets in western societies at the end of the twentieth century. PhD study. Radboud University Nijmegen.
2. Abdeldayem, H., El-Kased, A. F., Elshaarawy, A., Hammad, E. S., Al-Haddad, O., Gihan Sobhi, G., & Allam, A. (2016). Religious concepts in organ transplantation (pp. 3–22). IntechOpen. https://doi.org/10.5772/62401
3. Abraham, K. G., Helms, S., & Presser, S. (2009). How social processes distort measurement: The impact of survey nonresponse on estimates of volunteer work in the United States. American Journal of Sociology, 114(4), 1129–1165.
4. Akbari, B. (2013). Examine the relationship between religiosity and social capital. International Journal of Academic Research in Business and Social Science, 3(12), 328–336.
5. Akiş, M., Katirci, E., Uludağ, H. Y., Küçükkiliç, B., Gürbüz, T., Türker, Y., Kayacan, H., Öngel, K., & Hüseyi, G. (2008). Knowledge and attitudes of Süleyman Demirel University’s staff towards organ donation and transplantation. Journal of the Süleyman Demirel University Faculty of Medicine, 15, 28–33.