Petrova, Mariya I.; Lievens, Elke; Malik, Shweta; Imholz, Nicole; Lebeer, Sarah (2015). „Lactobacillus species as biomarkers and agents that can promote various aspects of vaginal health”. Frontiers in Physiology. 6. ISSN1664-042X. doi:10.3389/fphys.2015.00081.
Lloyd, J.; Crouch, N. S.; Minto, C. L.; Liao, L. M.; Creighton, S. M. (2005). „Female genital appearance: "normality" unfolds”. BJOG : An International Journal of Obstetrics and Gynaecology. 112 (5): 643—646. PMID15842291. S2CID17818072. doi:10.1111/j.1471-0528.2004.00517.x.
Lloyd, J.; Crouch, N. S.; Minto, C. L.; Liao, L. M.; Creighton, S. M. (2005). „Female genital appearance: "normality" unfolds”. BJOG : An International Journal of Obstetrics and Gynaecology. 112 (5): 643—646. PMID15842291. S2CID17818072. doi:10.1111/j.1471-0528.2004.00517.x.
Lloyd, J.; Crouch, N. S.; Minto, C. L.; Liao, L. M.; Creighton, S. M. (2005). „Female genital appearance: "normality" unfolds”. BJOG : An International Journal of Obstetrics and Gynaecology. 112 (5): 643—646. PMID15842291. S2CID17818072. doi:10.1111/j.1471-0528.2004.00517.x.
Petrova, Mariya I.; Lievens, Elke; Malik, Shweta; Imholz, Nicole; Lebeer, Sarah (2015). „Lactobacillus species as biomarkers and agents that can promote various aspects of vaginal health”. Frontiers in Physiology. 6. ISSN1664-042X. doi:10.3389/fphys.2015.00081.