What muscles are targeted by these different variations of pull-ups: standard, chin-ups, and the neutral or parallel close grip pull-up? - Physical Fitness Stack Exchange
Machine-Assisted Close Neutral-Grip Pull-Up (Back) – Fitness Volt
How to Perform the Close-Grip Chinup | Men's Health
Build Your Upper Body With Close-Grip Pull-Ups - GymGuider.com
Close Grip Pull Ups: Muscles Worked, How-To & Benefits | Muscles Used
USN: How to do Close Grip Pull Ups - YouTube
Pull Ups vs Chin Ups: The Ultimate Comparison
Pull-Up Grips: Wide, Close, Neutral, Supinated, Or Pronated – What Is The Best Grip Combination To Build Bigger And Wider Lats? - Lane Goodwin
Close Grip Pullups / Chinups – WorkoutLabs Exercise Guide
Are Wide Or Narrow Pull-Ups Best For Building A Wider Back? - YouTube