Stephenson, J., Strange, V., Allen, E., Copas, A., Johnson, A., Bonell, C., . . . Team, R. S. (2008). The long-term effects of a peer-led sex education programme (RIPPLE): A cluster randomised trial in schools in England. Public Library of Science (PLoS).
Style de citation Chicago (17e éd.)Stephenson, Judith, Vicki Strange, Elizabeth Allen, Andrew Copas, Anne Johnson, Chris Bonell, Abdel Babiker, Ann Oakley, et RIPPLE Study Team. The Long-term Effects of a Peer-led Sex Education Programme (RIPPLE): A Cluster Randomised Trial in Schools in England. Public Library of Science (PLoS), 2008.
Style de citation MLA (8e éd.)Stephenson, Judith, et al. The Long-term Effects of a Peer-led Sex Education Programme (RIPPLE): A Cluster Randomised Trial in Schools in England. Public Library of Science (PLoS), 2008.