Kettlebell Training Instructor Course Level 2 | Online Certification
Kettlebell Training Fundamentals: Achieve Pain-Free Kettlebell Training and Build a Strong Foundation to Become a Professional Kettlebell Trainer or Enthusiast: Fleur, Taco: 9781549556203: Amazon.com: Books
Kettlebell Specialty Certification - Online - NETA, National Exercise Trainers Association
Kettlebell training for sports and recreation - Marino Bašić