Genesis 46:12
12 mThe sons of Judah: Er, Onan, Shelah, Perez, and Zerah (but nEr and oOnan died in the land of Canaan); and the sons of Perez were Hezron and Hamul.
Numbers 26:19–20
19 oThe sons of Judah were Er and Onan; and pEr and Onan died in the land of Canaan. 20 And the sons of Judah according to their clans were: of Shelah, the clan of the Shelanites; of Perez, the clan of the Perezites; of Zerah, the clan of the Zerahites.
1 Chronicles 2:3–4
3 xThe sons of Judah: yEr, zOnan and aShelah; these three Bath-shua the Canaanite bore to him. bNow Er, Judah’s firstborn, was evil in the sight of the Lord, and he put him to death. 4 His daughter-in-law cTamar also bore him dPerez and eZerah. Judah had five sons in all.