This blog provides relevant research discussing various grip positions, the muscles worked with the lat pulldown, and proper form of the movement.
How to Do the Neutral-Grip Lat Pulldown for a Bigger Back
PDF) A Comparative Analysis and Technique of the Lat Pull-down
Close-Grip vs. Wide-Grip in the Lat Pulldown — Differences
7 Lat Pull Down Variations for Serious Back Development
The Ultimate Guide to Lat Pulldowns - Maximize Your Lat Hypertrophy
Puxada no pulley com pegada invertida supinada e distância normal - Como fazer e erros comuns - MundoBoaForma
How Pullups Work (WIDE GRIP, STANDARD, & CHIN-UP BIOMECHANICS
Health & Fitness Blog - NASM (37)
Kinesiology of the Lat Pulldown Exercise