* Smith, Kelly B.; Pukall, Caroline F. (maio de 2009). "An evidence-based review of yoga as a complementary intervention for patients with cancer". Psycho-Oncology18 (5). pp. 465–475. PMID18821529. doi:10.1002/pon.1411.
* Smith, Kelly B.; Pukall, Caroline F. (maio de 2009). "An evidence-based review of yoga as a complementary intervention for patients with cancer". Psycho-Oncology18 (5). pp. 465–475. PMID18821529. doi:10.1002/pon.1411.