Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service) & Soell, H. (2014). Helmut Schmidt: Pioneer of International Economic and Financial Cooperation. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service) και Hartmut Soell. Helmut Schmidt: Pioneer of International Economic and Financial Cooperation. Cham: Springer International Publishing : Imprint: Springer, 2014.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service) και Hartmut Soell. Helmut Schmidt: Pioneer of International Economic and Financial Cooperation. Springer International Publishing : Imprint: Springer, 2014.