APA (7th ed.) Citation

Viehrig, K., Volz, D., & Siegmund, A. (2008). A question of objective: Implementing GIS-use in secondary schools : Kathrin Viehrig, Daniel Volz, Alexander Siegmund. Proceedings.

Chicago Style (17th ed.) Citation

Viehrig, Kathrin, Daniel Volz, and Alexander Siegmund. "A Question of Objective: Implementing GIS-use in Secondary Schools : Kathrin Viehrig, Daniel Volz, Alexander Siegmund." Proceedings 2008.

MLA (9th ed.) Citation

Viehrig, Kathrin, et al. "A Question of Objective: Implementing GIS-use in Secondary Schools : Kathrin Viehrig, Daniel Volz, Alexander Siegmund." Proceedings, 2008.