Puranas.
18 Puranas: There are 18 puranas and 18 upa-puranas. The 18 puranas are :

Ma 2 : Matsya and Maarkandeya
Bha 2: Bhavishya and Bhagavat

Bra 3: Brahma, Brahmaanda and Brahma-Vaivartha

Va 4: Vishnu, Varaaha, Vaamana & Vayu (?)

A-Naa-Pa-Lin-Ga-Ku-S (7): Agni, Naarada, Padma, Linga, Garuda, Kurma and Skanda.

(?) Some include Siva Purnam instead of Vayu.