World Health Organization. (1991). Environmental health criteria 142: Alpha cypermethrin. World Health Organization.
Cita Chicago Style (17a ed.)World Health Organization. Environmental Health Criteria 142: Alpha Cypermethrin. Geneva: World Health Organization, 1991.
Cita MLA (8a ed.)World Health Organization. Environmental Health Criteria 142: Alpha Cypermethrin. World Health Organization, 1991.
Precaución: Estas citas no son 100% exactas.