APA (7th ed.) Citation

Sierra, S., & Tierney, A. (2009). Resistance flexibility and strength training. Healthy Learning.

Chicago Style (17th ed.) Citation

Sierra, Steven, and Anne Tierney. Resistance Flexibility and Strength Training. Monterey, CA: Healthy Learning, 2009.

MLA (9th ed.) Citation

Sierra, Steven, and Anne Tierney. Resistance Flexibility and Strength Training. Healthy Learning, 2009.