Shiva Purana
विद्येश्वराख्या तत्राद्या रौद्री ज्ञेया द्वितीयिका । तृतीया शतरुद्रा ख्या कोटिरुद्रा चतुर्थिका 1-2-६० ।
The first Saṃhitā is called Vidyeśvara, the second Rudra, the third Śatarudra and the fourth Koṭirudra.
english translation
vidyezvarAkhyA tatrAdyA raudrI jJeyA dvitIyikA । tRtIyA zatarudrA khyA koTirudrA caturthikA 1-2-60 ।
hk transliteration by Sanscript