LEE, W.; MAHMUD, R.; NOORDIN, R.; PIARU, S.; PERUMAL, S.; ISMAIL, S. Alkaloids content, cytotoxicity and anti-Toxoplasma gondii activity of Psidium guajava L. and Tinospora crispa. Bangladesh Journal of Pharmacology, v. 7, n. 4, p. 272-276, 22 nov. 2012.