Davis, T., Crouch, M., Long, S., Jackson, R., Bates, P., George, R., & Bairnsfather, L. (1991). Rapid assessment of literacy levels of adult primary care patients. Familiy medicine, 23(6), 433–435.

Nutbeam, D. (2000). Health literacy as a public health goal: a challenge for contemporary health education and communication strategies into the 21st century. Health Promotion International, 15(3), 259–267. https://doi.org/10.1093/heapro/15.3.259

Parker, R. M., Baker, D. W., Williams, M. V. & Nurss, J. R. (1995). The test of functional health literacy in adults: a new instrument for measuring patients' literacy skills. Journal of general internal medicine, 10(10), 537–541. https://doi.org/10.1007/bf02640361

Schaeffer, D., Hurrelmann, K., Bauer, U., Kolpatzik, K., & Altiner, A. (2018). Nationaler Aktionsplan Gesundheitskompetenz. Die Gesundheitskompetenz in Deutschland stärken: Informationen bewerten, finden, anwenden, verstehen. 

Sørensen, K., van den Broucke, S., Fullam, J., Doyle, G., Pelikan, J., Slonska, Z. & Brand, H. (2012). Health literacy and public health: a systematic review and integration of definitions and models. BMC public health, 12, 80. https://doi.org/10.1186/1471-2458-12-80