Cita APA (7a ed.)
(1990). Environmental technology. Publications Division, Selper Ltd..
Cita Chicago Style (17a ed.)
Environmental Technology. London: Publications Division, Selper Ltd., 1990.
Cita MLA (9a ed.)
Environmental Technology. Publications Division, Selper Ltd., 1990.
Precaución: Estas citas no son 100% exactas.