Παραπομπή σε μορφή APA (7η εκδ.)

Eells, J., & Ratto, A. (1993). Harmonic maps and minimal immersions with symmetries: Methods of ordinary differential equations applied to elliptic variational problems. Princeton University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Eells, James, και Andrea Ratto. Harmonic Maps and Minimal Immersions with Symmetries: Methods of Ordinary Differential Equations Applied to Elliptic Variational Problems. Princeton, N.J.: Princeton University Press, 1993.

Παραπομπή σε μορφή MLA (8th εκδ.)

Eells, James, και Andrea Ratto. Harmonic Maps and Minimal Immersions with Symmetries: Methods of Ordinary Differential Equations Applied to Elliptic Variational Problems. Princeton University Press, 1993.