Book in Sanskrit by Sri U Ve P B Annangarachariar Swami DivyaPrabandham in Sanskrit : Thiruppallandu, Kanninun Siruththambu, Thiruvaymozhi, Thiruppavai, Ramanuja Nutrandhadhi http://acharya.org/bk/pb/pba/dugm.pdf
Thiruppallandu: Essence of the Commentary
New Book in Tamil by TCA Venkatesan Available on Amazon for Kindle
Meypporul Vazhchchi
1950 Book in Tamil By Purisai Paravastu Varadachariar Swami http://acharya.org/bk/pb/ppv/mv.pdf
பெரியாழ்வார் திருமொழியில் தமிழ்ச் சுவை
Talk in Tamil, by TCA Venkatesan, on some of the interesting and informative use of Tamil words & descriptions by Periyazhvar in his Thirumozhi. https://svlife.gumroad.com/l/ixgre
நித்யாநுஸந்தானம்: வடகலை
PDF Book in Tamil https://svlife.gumroad.com/l/iidmj