APA (7th ed.) Citation

Helgason, S. (2000). Groups and geometric analysis: Integral geometry, invariant differential operators, and spherical functions. American Mathematical Society.

Chicago Style (17th ed.) Citation

Helgason, Sigurdur. Groups and Geometric Analysis: Integral Geometry, Invariant Differential Operators, and Spherical Functions. Providence: American Mathematical Society, 2000.

MLA (8th ed.) Citation

Helgason, Sigurdur. Groups and Geometric Analysis: Integral Geometry, Invariant Differential Operators, and Spherical Functions. American Mathematical Society, 2000.

Warning: These citations may not always be 100% accurate.