‘Abbott Elementary’ Sets Crossover Episode With ‘It’s Always Sunny in Philadelphia’ - Variety
- ‘Abbott Elementary’ Sets Crossover Episode With ‘It’s Always Sunny in Philadelphia’ Variety
- It’s Always Sunny Takes a Field Trip to Abbott Elementary Vulture
- "Abbott Elementary," "It's Always Sunny in Philadelphia" tease crossover episode on social media CBS News
- ‘Abbott Elementary’ To Cross Over With ‘It’s Always Sunny In Philadelphia’ In Season 4 Deadline
- ‘Abbott Elementary’ and ‘It’s Always Sunny in Philadelphia’ Creators Confirm Crossover Episode Us Weekly