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SugayaS.K.SugayaS. i inni, Influence of hypertension on lower urinary tract symptoms in benign prostatic hyperplasia, „Int J Urol.”, 10 (11), 2003, 569-74; discussion 575., DOI: 10.1046/j.1442-2042.2003.00707.x, PMID: 14633079 [dostęp 2016-05-29](ang.).
MichelM.M.C.MichelM. i inni, Association of hypertension with symptoms of benign prostatic hyperplasia, „Journal of Urology”, 172 (4 Pt 1), 2004, s. 1390-3, DOI: 10.1097/01.ju.0000139995.85780.d8, PMID: 15371852 [dostęp 2016-05-29](ang.).
ElliotE.FagelmanElliotE., Franklin CF.C.LoweFranklin CF.C., Saw Palmetto Berry as a Treatment for BPH, „Reviews in Urology”, 3 (3), 2001, s. 134–138, ISSN1523-6161, PMID: 16985705, PMCID: PMC1476047 [dostęp 2020-10-08].