Presmeg, N., Radford, L., Roth, W., & Kadunz, G. (2016). Semiotics in Mathematics Education. Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-31370-2
Lua i Stíl Chicago (17ú heag.)Presmeg, Norma, Luis Radford, Wolff-Michael Roth, agus Gert Kadunz. Semiotics in Mathematics Education. Cham: Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-31370-2.
Lua MLA (9ú heag.)Presmeg, Norma, et al. Semiotics in Mathematics Education. Springer International Publishing : Imprint: Springer, 2016. https://doi.org/10.1007/978-3-319-31370-2.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.