Shiva Purana
या शताक्षी स्मृता देवी सैव शाकंभरी मता ॥ सैव प्रकीर्तिता दुर्गा व्यक्तिरेकैव त्रिष्वपि ॥ ५१ ॥
The goddess Śatākṣī, Śākambharī and Durgā are identical. In all the three the individual is the same.
english translation
yA zatAkSI smRtA devI saiva zAkaMbharI matA ॥ saiva prakIrtitA durgA vyaktirekaiva triSvapi ॥ 51 ॥
hk transliteration by Sanscript