One verse

Srimad Bhagavatam 12.7.23-24

12.7.23-24

ब्राह्मं पाद्मं वैष्णवं च शैवं लैङ्गं सगारुडं । नारदीयं भागवतमाग्नेयं स्कान्दसंज्ञितम् ॥ २३ ॥ भविष्यं ब्रह्मवैवर्तं मार्कण्डेयं सवामनम् । वाराहं मात्स्यं कौर्मं च ब्रह्माण्डाख्यमिति त्रिषट् ॥ २४ ॥

brāhmaṁ pādmaṁ vaiṣṇavaṁ ca śaivaṁ laiṅgaṁ sa-gāruḍaṁ nāradīyaṁ bhāgavatam āgneyaṁ skānda-saṁjñitam bhaviṣyaṁ brahma-vaivartaṁ mārkaṇḍeyaṁ sa-vāmanam vārāhaṁ mātsyaṁ kaurmaṁ ca brahmāṇḍākhyam iti tri-ṣaṭ

brāhmam
the Brahma Purāṇa
pādmam
the Padma Purāṇa
vaiṣṇavam
the Viṣṇu Purāṇa
ca
and
śaivam
the Śiva Purāṇa
laiṅgam
the Liṅga Purāṇa
sa-gāruḍam
along with the Garuḍa Purāṇa
nāradīyam
the Nārada Purāṇa
bhāgavatam
the Bhāgavata Purāṇa
āgneyam
the Agni Purāṇa
skānda
the Skanda Purāṇa
saṁjñitam
known as
bhaviṣyam
the Bhaviṣya Purāṇa
brahma-vaivartam
the Brahma-vaivarta Purāṇa
mārkaṇḍeyam
the Mārkaṇḍeya Purāṇa
sa-vāmanam
together with the Vāmana Purāṇa
vārāham
the Varāha Purāṇa
mātsyam
the Matsya Purāṇa
kaurmam
the Kūrma Purāṇa
ca
and
brahmāṇḍa-ākhyam
known as the Brahmāṇḍa Purāṇa
iti
thus
tri-ṣaṭ
three times six

The eighteen major Purāṇas are the Brahma, Padma, Viṣṇu, Śiva, Liṅga, Garuḍa, Nārada, Bhāgavata, Agni, Skanda, Bhaviṣya, Brahma-vaivarta, Mārkaṇḍeya, Vāmana, Varāha, Matsya, Kūrma and Brahmāṇḍa Purāṇas.