Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Knez, M., Petrič, M., Slabe, T., & Šebela, S. (2015). The Beka-Ocizla Cave System: Karstological Railway Planning in Slovenia. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Martin Knez, Metka Petrič, Tadej Slabe, και Stanka Šebela. The Beka-Ocizla Cave System: Karstological Railway Planning in Slovenia. Cham: Springer International Publishing : Imprint: Springer, 2015.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. The Beka-Ocizla Cave System: Karstological Railway Planning in Slovenia. Springer International Publishing : Imprint: Springer, 2015.