Citazione Stile APA (7a Edizione)

Helgason, S. (1978). Differential geometry, Lie groups, and symmetric spaces. Academic Press.

Citazione stile Chigago Style (17a edizione)

Helgason, Sigurdur. Differential Geometry, Lie Groups, and Symmetric Spaces. Nueva York: Academic Press, 1978.

Citatione MLA (9a ed.)

Helgason, Sigurdur. Differential Geometry, Lie Groups, and Symmetric Spaces. Academic Press, 1978.