# Citation for marginal of uniform hypersphere distribution

Based on some other answers (such as Marginal Distribution of Uniform Vector on Sphere), I understand that the marginal of a uniform distribution on a hypersphere is a Beta distribution.

Is there a paper/textbook that proves this seemingly standard result that I could cite in my paper? Note that the link I shared does have the answer, but I'm looking for something that I can cite.

• Maybe you can try asking this on the Statistics site. Don't forget to make the disclaimer of cross-posting. – Lee David Chung Lin Apr 12 at 14:17