Shiva Purana
सनकश्च सनन्दश्च तृतीयश्च सनातनः॥ कपिलश्चासुरिश्चैव वोढुः पंचशिखस्तथा॥ ९॥
The seven sons are—Sanaka, Sananda, Sanātana, Kapila, Āsuri, Voḍhu and Pañcaśikha.
english translation
sanakazca sanandazca tRtIyazca sanAtanaH॥ kapilazcAsurizcaiva voDhuH paMcazikhastathA॥ 9॥
hk transliteration by Sanscript