David Gumbrell

ブック
SPIN SPIN
SPIN
2025年
RISK RISK
RISK
2025年
LIFT! LIFT!
LIFT!
2025年

オーディオブック
LIFT! : Going up if teaching gets you down LIFT! : Going up if teaching gets you down
LIFT! : Going up if teaching gets you down
2026年
Lift!: Going Up if Teaching Gets You Down (Practical Teaching) (Unabridged) Lift!: Going Up if Teaching Gets You Down (Practical Teaching) (Unabridged)
Lift!: Going Up if Teaching Gets You Down (Practical Teaching) (Unabridged)
2024年