Spellman, F. R., & Bieber, R. M. (2010). Encyclopedia of environmental health and science. Government Institutes.
Citazione stile Chigago Style (17a edizione)Spellman, Frank R., e Revonna M. Bieber. Encyclopedia of Environmental Health and Science. Lanham: Government Institutes, 2010.
Citatione MLA (9a ed.)Spellman, Frank R., e Revonna M. Bieber. Encyclopedia of Environmental Health and Science. Government Institutes, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.