Παραπομπή σε μορφή APA (7η εκδ.)

Tromba, A. (1977). On the number of simply connected minimal surfaces spanning a curve. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tromba, Anthony. On the Number of Simply Connected Minimal Surfaces Spanning a Curve. Providence, R.I.: American Mathematical Society, 1977.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tromba, Anthony. On the Number of Simply Connected Minimal Surfaces Spanning a Curve. American Mathematical Society, 1977.