Okeke, Linus Ikechukwu; George, Adekunle Olufemi; Ogunbiyi, Adebola Olufunmilayo; Wachtel, Mitchelle (November 2012). "Prevalence of linea nigra in patients with benign prostatic hyperplasia and prostate carcinoma". International Journal of Dermatology (به انگلیسی). 51: 41–43. doi:10.1111/j.1365-4632.2012.05564.x. ISSN0011-9059. PMID23210957.
nih.gov
pubmed.ncbi.nlm.nih.gov
Okeke, Linus Ikechukwu; George, Adekunle Olufemi; Ogunbiyi, Adebola Olufunmilayo; Wachtel, Mitchelle (November 2012). "Prevalence of linea nigra in patients with benign prostatic hyperplasia and prostate carcinoma". International Journal of Dermatology (به انگلیسی). 51: 41–43. doi:10.1111/j.1365-4632.2012.05564.x. ISSN0011-9059. PMID23210957.
Okeke, Linus Ikechukwu; George, Adekunle Olufemi; Ogunbiyi, Adebola Olufunmilayo; Wachtel, Mitchelle (November 2012). "Prevalence of linea nigra in patients with benign prostatic hyperplasia and prostate carcinoma". International Journal of Dermatology (به انگلیسی). 51: 41–43. doi:10.1111/j.1365-4632.2012.05564.x. ISSN0011-9059. PMID23210957.