APA-viite (7. p.)

Bontje, M., & Burdack, J. (2005). Economic poles in the European metropolitan periphery and sustainable development. Leibniz-Inst. für Länderkunde.

Chicago-viite (17. p.)

Bontje, Marco, ja Joachim Burdack. Economic Poles in the European Metropolitan Periphery and Sustainable Development. Leipzig: Leibniz-Inst. für Länderkunde, 2005.

MLA-viite (8. p.)

Bontje, Marco, ja Joachim Burdack. Economic Poles in the European Metropolitan Periphery and Sustainable Development. Leibniz-Inst. für Länderkunde, 2005.