APA (7th ed.) Citation

Campbell, O. .. e. a., Cleland, J., Collumbien, M., & Southwick, K. (1999). Social science methods for research on reproductive health: HRP (ed.). WHO.

Chicago Style (17th ed.) Citation

Campbell, Oona ... et al, John Cleland, Martine Collumbien, and Karen Southwick. Social Science Methods for Research on Reproductive Health: HRP. ed. Distr: General: WHO, 1999.

MLA (9th ed.) Citation

Campbell, Oona ... et al, et al. Social Science Methods for Research on Reproductive Health: HRP. ed. WHO, 1999.