Shiva Purana
शैवीं सदाशिवाख्यां वा तथा माहेश्वरीं पराम् ॥ षड्विंशकाभिधानां वा श्रीकंठाख्यामथापि वा ॥ १८ ॥
The goddess known as Śiva or Sadaśiva is also known as Māheśvarī. Or the name of the twenty-six or the name of Srikantha.
english translation
zaivIM sadAzivAkhyAM vA tathA mAhezvarIM parAm ॥ SaDviMzakAbhidhAnAM vA zrIkaMThAkhyAmathApi vA ॥ 18 ॥
hk transliteration by Sanscript