Macho Row: The 1993 Phillies and Baseball's Unwritten Code: Kashatus, William C.: 9780803290860: : Books
MLB Unwritten Rules: From permissible to downright idiotic: Here are MLB's Top 10 Unwritten Rules
Brisbee: The Giants are right about the unwritten rules, but they're taking a risk - The Athletic
10 unwritten rules for not screwing up your NFL jersey number
The Best Young Player in Baseball Swings on 3-0. Here's Why Everyone Should. - WSJ
Jackie Robinson broke MLB's color barrier. Meet the Black and Latino players who came next.
The 2021 Post–All-Star Break MLB Power Rankings - The Ringer
MLB's new postseason hype video is an ode to breaking the rules - DRaysBay
How players are using uniform numbers to break MLB's unwritten rules - ESPN
MLB season preview: Aaron Judge, Shohei Ohtani, the Houston Astros and MORE
The unwritten rules of baseball
Barber: Pace of play not the problem for MLB
Baseball - Wikipedia
What happens if a baseball player's name is too long for the jersey? - Quora