Srimad Bhagavatam Canto 10, Chapter 61, Text 07

SB 10.61.7

tasam ya dasa-putranam
 krsna-strinam puroditah
astau mahisyas tat-putran
 pradyumnadin grnami te
 
Translation: 
 
Among Lord Krsna’s wives, each of whom had ten sons, I previously mentioned eight principal queens. I shall now recite for you the names of those eight queens’ sons, headed by Pradyumna.
Srimad Bhagavatam Canto 10, Chapter 61, Text 06
Srimad Bhagavatam Canto 10, Chapter 61, Text 08-09