APA (7th ed.) Citation

Sigel, A., Sigel, H., & Sigel, R. K. O. (2017). Lead: Its effects on environment and health. De Gruyter.

Chicago Style (17th ed.) Citation

Sigel, Astrid, Helmut Sigel, and Roland K. O. Sigel. Lead: Its Effects on Environment and Health. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter, 2017.

MLA (9th ed.) Citation

Sigel, Astrid, et al. Lead: Its Effects on Environment and Health. De Gruyter, 2017.