Cramer, H., Frawley, J., Steel, A., Hall, H., Adams, J., Broom, A., & Sibbritt, D. (2015). Characteristics of women who practice yoga in different locations during pregnancy. BMJ Open.

Cramer, Holger, Jane Frawley, Amie Steel, Helen Hall, Jon Adams, Alex Broom, und David Sibbritt. "Characteristics of Women Who Practice Yoga in Different Locations During Pregnancy." BMJ Open 2015.

Cramer, Holger, et al. "Characteristics of Women Who Practice Yoga in Different Locations During Pregnancy." BMJ Open 2015.