Παραπομπή σε μορφή APA (7η εκδ.)

Siegel, F. R. (2008). Demands of Expanding Populations and Development Planning: Clean Air, Safe Water, Fertile Soils. Springer Berlin Heidelberg.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Siegel, Frederic R. Demands of Expanding Populations and Development Planning: Clean Air, Safe Water, Fertile Soils. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008.

Παραπομπή σε μορφή MLA (8th εκδ.)

Siegel, Frederic R. Demands of Expanding Populations and Development Planning: Clean Air, Safe Water, Fertile Soils. Springer Berlin Heidelberg, 2008.