Citação norma APA

Stephenson, J., Strange, V., Allen, E., Copas, A., Johnson, A., Bonell, C., . . . Oakley, A. (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.

Citação norma Chicago

Stephenson, Judith, Vicki Strange, Elizabeth Allen, Andrew Copas, Anne Johnson, Chris Bonell, Abdel Babiker, and Ann Oakley. The Long-Term Effects of a Peer-Led Sex Education Programme (RIPPLE): A Cluster Randomised Trial in Schools in England. Public Library of Science, 2008.

Citação norma MLA

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, 2008.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.