Citazione Stile APA (7a Edizione)

Helgason, S. (2012). Differential geometry, Lie groups, and symmetric spaces (3a. ed.). American Mathematical Society.

Citazione stile Chigago Style (17a edizione)

Helgason, Sigurdur. Differential Geometry, Lie Groups, and Symmetric Spaces. 3a. ed. Providence: American Mathematical Society, 2012.

Citatione MLA (9a ed.)

Helgason, Sigurdur. Differential Geometry, Lie Groups, and Symmetric Spaces. 3a. ed. American Mathematical Society, 2012.