# Devala [[bg/5|Bg. 5]], [[bg/7/15|Bg. 7.15]] (2), [[bg/18/62|Bg. 18.62]], [[cc/madhya/22/140#purport|Madhya 22.140]], [[sb/1/1/17#purport|SB 1.1.17]], [[sb/1/8/19#purport|SB 1.8.19]], [[sb/4/14/14#purport|SB 4.14.14]], [[sb/6/15/12-15#purport|SB 6.15.12-15]], [[sb/6/6/20#purport|SB 6.6.20]], [[sb/8/24/53#purport|SB 8.24.53]], [[sb/9/4/57-59#purport|SB 9.4.57-59]] * as authority, [[sb/1/15/44#purport|SB 1.15.44]] * historical accounts on, [[sb/1/19/9-10#purport|SB 1.19.9-10]] * Śukadeva heard of Vṛtrāsura from, [[sb/6/14/9#purport|SB 6.14.9]]