What are the canonical definitions of vitarka-vicara in the Tripitaka or related literature

The quote below defines Vitarka-vicara as: - Ardency (atappa) + mindfulness (sati) => combines to make vitakka - Ardency (atappa) + alertness (sampajañña) => combines to make vicara > As Ajaan Lee, my teacher’s teacher, once noted, mindfulness combined with ardency turns into the concentration factor called vitakka, or directed thought, where you keep your thoughts consistently focused on one object, such as the breath. Alertness combined with ardency turns into another concentration factor: vicāra, or evaluation Head & Heart Together, by Ṭhānissaro Bhikkhu, Chapter: Mindfulness Defined No citation from the cannon have been given in this discussion. What are the Tipitaka, commentary, sub commentary sources, including primary, secondary or tertiary source with citations, which defines Vitarka-vicara as such? Are there other definitions of Vitarka-vicara from Tipitaka, commentaries, sub commentaries, including primary, secondary or tertiary source with citations?