Sokal and Rohlf: Chapter 13.1-13.9.

OpenIntro notes: Section 5.5.

John Verzani's SimpleR notes: Section 15.

Dalgaard: Chapter 7.1.

Testing for equality of variances: Bartlett and Levene and Brown-Forsythe and Hartley.

RR Sokal, FJ Rohlf (2011). Biometry, 4th edition, WH Freeman.This text is required. Everything else is not madatory, only listed as suggestion in case you want to do some additional reading and/or exercises.