Bellis, M. A., & Downing, J. (2009). Early pubertal onset and its relationship with sexual risk taking, substance use and anti-social behaviour: A preliminary cross-sectional study. BMC public health. doi:10.1186/1471-2458-9-446
Chicago-Zitierstil (17. Ausg.)Bellis, Mark A., und Jennifer Downing. "Early Pubertal Onset and Its Relationship with Sexual Risk Taking, Substance Use and Anti-social Behaviour: A Preliminary Cross-sectional Study." BMC Public Health 2009. https://doi.org/10.1186/1471-2458-9-446.
MLA-Zitierstil (9. Ausg.)Bellis, Mark A., und Jennifer Downing. "Early Pubertal Onset and Its Relationship with Sexual Risk Taking, Substance Use and Anti-social Behaviour: A Preliminary Cross-sectional Study." BMC Public Health, 2009, https://doi.org/10.1186/1471-2458-9-446.