Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Hafner, M., & Tagliapietra, S. (2017). The European Gas Markets: Challenges and Opportunities. Springer International Publishing : Imprint: Palgrave Macmillan.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Manfred Hafner, και Simone Tagliapietra. The European Gas Markets: Challenges and Opportunities. Cham: Springer International Publishing : Imprint: Palgrave Macmillan, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. The European Gas Markets: Challenges and Opportunities. Springer International Publishing : Imprint: Palgrave Macmillan, 2017.