Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Ungar, A., & Marchionni, N. (2017). Cardiac Management in the Frail Elderly Patient and the Oldest Old. Springer International Publishing : Imprint: Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Andrea Ungar, και Niccolò Marchionni. Cardiac Management in the Frail Elderly Patient and the Oldest Old. Cham: Springer International Publishing : Imprint: Springer, 2017.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Cardiac Management in the Frail Elderly Patient and the Oldest Old. Springer International Publishing : Imprint: Springer, 2017.