Core data for epidemiological studies of nonmedical drug use

MLA

Hughes, P. H, et al. Core Data for Epidemiological Studies of Nonmedical Drug Use. Geneva: World Health Organisation, 1980.

APA

Hughes, P. H, Khant, U., Medina Mora, M. E, Navaratnam, V., & Venulet, J. (1980). Core data for epidemiological studies of nonmedical drug use. Geneva: World Health Organisation.

Chicago

Hughes, P. H., U Khant, M. E Medina Mora, V. Navaratnam, and J. Venulet. Core Data for Epidemiological Studies of Nonmedical Drug Use. Geneva: World Health Organisation, 1980.