Sokal and Rohlf: Chapter 5, 6.1-6.3.

OpenIntro notes: Sections 2.4.1-2.4.2.

John Verzani's SimpleR notes: Section 3.

Dalgaard: Chapter 3.

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.