Citazione Stile APA (7a Edizione)
Sigel, A., Sigel, H., & Sigel, R. K. O. (2017). Lead: Its effects on environment and health. De Gruyter.
Citazione stile Chigago Style (17a edizione)
Sigel, Astrid, Helmut Sigel, e Roland K. O. Sigel. Lead: Its Effects on Environment and Health. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter, 2017.
Citatione MLA (9a ed.)
Sigel, Astrid, et al. Lead: Its Effects on Environment and Health. De Gruyter, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.