Παραπομπή σε μορφή APA (7η εκδ.)

Grunewald, K., & Scheithauer, J. (2011). Landscape Development and Climate Change in Southwest Bulgaria (Pirin Mountains). Springer Netherlands.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Grunewald, Karsten, και Jörg Scheithauer. Landscape Development and Climate Change in Southwest Bulgaria (Pirin Mountains). Dordrecht: Springer Netherlands, 2011.

Παραπομπή σε μορφή MLA (8th εκδ.)

Grunewald, Karsten, και Jörg Scheithauer. Landscape Development and Climate Change in Southwest Bulgaria (Pirin Mountains). Springer Netherlands, 2011.