The Big Bang Theory (season 8) - Wikipedia

April Bowlby - Wikipedia

Sheldon Cooper - Wikipedia

Season 8, The Big Bang Theory Wiki

Laura Spencer - TV Guide

Jim Parsons - Wikipedia

Regina King - Wikipedia

Season 8, The Big Bang Theory Wiki

Penny (The Big Bang Theory) - Wikipedia

The Big Bang Theory - Wikipedia

The Big Bang Theory: Season 8

List of The Big Bang Theory episodes - Wikipedia

Mayim Bialik - Wikipedia

Big Bang - Wikipedia