Ferreira, William A., et al. “Susceptibility of Neisseria Gonorrhoeae Strains to the Antibiotics Used for Theatment of Urethraland Cervicaldischargeat a STD Ambulatory in Manaus - Brazil”. Brazilian Journal of Sexually Transmitted Diseases, vol. 13, no. 6, Sept. 2001, pp. 35-40, https://bjstd.org/revista/article/view/627.