Shiva Purana
तृतीयावरणे पश्चादर्चयेच्च प्रजापतीन् ॥ अष्टौ पूर्वांश्च पूर्वादौ त्रीन्प्राक्पश्चादनुक्रमात् ॥ ४२ ॥
He shall then worship the Prajāpatis in the third Āvaraṇa. The first eight shall be worshipped in the east and the remaining three in order from the cast onwards.
english translation
tRtIyAvaraNe pazcAdarcayecca prajApatIn ॥ aSTau pUrvAMzca pUrvAdau trInprAkpazcAdanukramAt ॥ 42 ॥
hk transliteration by Sanscript