LiPur, 1, 2, 33.2 maithunasya vidhiścaiva prativarṇamanukramāt //

NāSmṛ, 2, 1, 46.1 tat punar dvādaśavidhaṃ prativarṇāśrayāt smṛtam /

VNSūtraV zu VNSūtra, 7.1, 7.0 itthaṃ nānābhedollāsaprakāśarūpeṣu varṇanivahodayeṣu madhyāt prativarṇāntare vākcatuṣṭayakrameṇa akhaṇḍitavṛttyā svasvarūpam aparityajya yathāmukhopadiṣṭanītyā svara eva prathate ity uktaṃ bhavati //