Makinson C (1985). "The health consequences of teenage fertility". Family Planning Perspectives17 (3): 132–139. doi:10.2307/2135024. PMID2431924.
"Poor obstetric performance of teenagers: Is it age- or quality of care-related?". Journal of Obstetrics & Gynaecology24 (4): 395–398. 2004. doi:10.1080/01443610410001685529. PMID15203579.
Makinson C (1985). "The health consequences of teenage fertility". Family Planning Perspectives17 (3): 132–139. doi:10.2307/2135024. PMID2431924.
"Poor obstetric performance of teenagers: Is it age- or quality of care-related?". Journal of Obstetrics & Gynaecology24 (4): 395–398. 2004. doi:10.1080/01443610410001685529. PMID15203579.