Schulz, W., Ainley, J., Fraillon, J., Losito, B., & Agrusti, G. (2016). IEA International Civic and Citizenship Education Study 2016 Assessment Framework. Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-39357-5
Lua i Stíl Chicago (17ú heag.)Schulz, Wolfram, John Ainley, Julian Fraillon, Bruno Losito, agus Gabriella Agrusti. IEA International Civic and Citizenship Education Study 2016 Assessment Framework. Cham: Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-39357-5.
Lua MLA (9ú heag.)Schulz, Wolfram, et al. IEA International Civic and Citizenship Education Study 2016 Assessment Framework. Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-39357-5.