Παραπομπή σε μορφή APA (7η εκδ.)

Schenkel, W. (1998). From clean air to climate policy in the Netherlands and Switzerland--same problems, different strategies? Peter Lang.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schenkel, Walter. From Clean Air to Climate Policy in the Netherlands and Switzerland--same Problems, Different Strategies? Bern ; New York: Peter Lang, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Schenkel, Walter. From Clean Air to Climate Policy in the Netherlands and Switzerland--same Problems, Different Strategies? Peter Lang, 1998.