APA (7th ed.) Citation

Holden Qigong (Firm) & Holden, L. (2017). Introduction to qi gong. YMAA Publication Center.

Chicago Style (17th ed.) Citation

Holden Qigong (Firm) and Lee Holden. Introduction to Qi Gong. [Roslindale, Mass.]: YMAA Publication Center, 2017.

MLA (8th ed.) Citation

Holden Qigong (Firm) and Lee Holden. Introduction to Qi Gong. YMAA Publication Center, 2017.

Warning: These citations may not always be 100% accurate.