Źródła wykorzystane w artykule:
1. Moghadasian MH, Frohlich JJ. "Effects of dietary phytosterols on cholesterol metabolism and atherosclerosis: clinical and experimental evidence" [w:] "The American Journal of Medicine" 1999.
2. Kelly A Shaw, Jane Turner, Chris Del Mar "Tryptophan and 5-Hydroxytryptophan for depression" 2002 [pdf].
3. Mukesh Yadav, Shalini Jain, Radha Tomar, G. B. K. S. Prasad, and Hariom Yadav "Medicinal and biological potential of pumpkin: an updated review" [w:] "Nutrition Research Reviews", 2010. [pdf]
4. Xin-En Huang, Kaoru Hirose, Kenji Wakai, Keitaro Matsuo, Hidemi Ito, Jin Xiang, Toshiro Takezaki, Kazuo Tajima "Comparison of Lifestyle Risk Factors by Family History for Gastric, Breast, Lung and Colorectal Cancer" [w:] "Asian Pacific Journal of cancer prevention" 2004. [pdf]
