Παραπομπή σε μορφή APA (7η εκδ.)

Friedrich, J. (2013). International Environmental “soft law”: The Functions and Limits of Nonbinding Instruments in International Environmental Governance and Law. Springer Berlin Heidelberg : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Friedrich, Jürgen. International Environmental “soft Law”: The Functions and Limits of Nonbinding Instruments in International Environmental Governance and Law. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2013.

Παραπομπή σε μορφή MLA (8th εκδ.)

Friedrich, Jürgen. International Environmental “soft Law”: The Functions and Limits of Nonbinding Instruments in International Environmental Governance and Law. Springer Berlin Heidelberg : Imprint: Springer, 2013.