[Tamil] Irā. Araṅkarājaṉ (1986). Tiruvāymoḻi pēruraiyāḷar nampiḷḷai uraittiṟaṉ. (Ceṉṉai: Amuta nilaiyam limiṭeṭ): this Tamil book is a study that focuses on Nampiḷḷai’s commentary techniques.
[Tamil] Tē. Patmācaṉi (2018). Periyavāccāṉ piḷḷaiyiṉ tiruvāymoḻiyiṉ viyākkiyāṉam – ōr āyvu (Ceṉṉai: Lāvaṇyā patippakam): this Tamil is a study on Periyavāccāṉ Piḷḷai’s commentary on the Tiruvāymoḻi.
[Tamil] Mu. Vai. Aravintaṉ (1968). Uraiyāciriyarkaḷ (Citamparam: Maṇivācakar Nūlakam): this Tamil book is not dedicated to Manipravala commentary, but commentary literature in general, but does have a chapter dedicated to it.
Erin McCann & Suganya Anandakichenin (2021). “Tamil-Sanskrit Interactions in Medieval Śrīvaiṣṇava Literature.” In Aspects of Multilingualism in South India and Sri Lanka (Ed. by Giovanni Ciotti & Erin McCann. Pondichéry: IFP/ EFEO).