Bhatia, Kalsang; Martindale, Elizabeth A.; Rustamov, Oybek; Nysenbaum, Anthony M. (2009). „Surrogate pregnancy: an essential guide for clinicians”. The Obstetrician & Gynaecologist (на језику: енглески). 11 (1): 49—54. ISSN1744-4667. doi:10.1576/toag.11.1.49.27468.
Imrie, Susan; Jadva, Vasanti (4. 7. 2014). „The long-term experiences of surrogates: relationships and contact with surrogacy families in genetic and gestational surrogacy arrangements”. Reproductive BioMedicine Online. 29 (4): 424—435. PMID25131555. doi:10.1016/j.rbmo.2014.06.004.CS1 одржавање: Формат датума (веза)
Bhatia, Kalsang; Martindale, Elizabeth A.; Rustamov, Oybek; Nysenbaum, Anthony M. (2009). „Surrogate pregnancy: an essential guide for clinicians”. The Obstetrician & Gynaecologist (на језику: енглески). 11 (1): 49—54. ISSN1744-4667. doi:10.1576/toag.11.1.49.27468.