Viehrig, K., & Siegmund, A. (2012). Germany: Diverse GIS implementations within a diverse educational landscape. International perspectives on teaching and learning with GIS in secondary schools.
Chicago-Zitierstil (17. Ausg.)Viehrig, Kathrin, und Alexander Siegmund. "Germany: Diverse GIS Implementations Within a Diverse Educational Landscape." International Perspectives on Teaching and Learning with GIS in Secondary Schools 2012.
MLA-Zitierstil (9. Ausg.)Viehrig, Kathrin, und Alexander Siegmund. "Germany: Diverse GIS Implementations Within a Diverse Educational Landscape." International Perspectives on Teaching and Learning with GIS in Secondary Schools, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.