Garudapurana 1.38.16.p1

1.38.16.p1

iti śrīgāruḍe mahāpurāṇe pūrvakhaṇḍe prathamāṃśākhye ācārakāṇḍe durgājapapūjābalimantranirūpaṇaṃ nāmāṣṭatriṃśo 'dhyāyaḥ

Thus, in the holy Garuḍa Purāṇa, in the first section called the Ācārakāṇḍa of the first part, the thirty-eighth chapter, entitled "Ascertainment of the Mantras for the Recitation, Worship, and Offering to Durgā."