Shiva Purana
चतुस्स्थाने स्थिता देवि षोडशैताः प्रकीर्तिताः ॥ तेषां प्रमाणं वक्ष्यामि साम्प्रतं हि यथार्थतः॥ ५०॥
O goddess, these sixteen are mentioned as stationed in four places. I shall now mention their extent factually.
english translation
catussthAne sthitA devi SoDazaitAH prakIrtitAH ॥ teSAM pramANaM vakSyAmi sAmprataM hi yathArthataH॥ 50॥
hk transliteration by Sanscript