APA
(1990). Environmental regulattion and technology : autothermal thermophilic aerobic digestion of municipal wastewater sludge. Washington: Environmental Protection Agency (EPA).
Chicago
1990. Environmental regulattion and technology : autothermal thermophilic aerobic digestion of municipal wastewater sludge. Washington: Environmental Protection Agency (EPA).
Harvard
(1990). Environmental regulattion and technology : autothermal thermophilic aerobic digestion of municipal wastewater sludge. Washington: Environmental Protection Agency (EPA).
MLA
Environmental regulattion and technology : autothermal thermophilic aerobic digestion of municipal wastewater sludge. Washington: Environmental Protection Agency (EPA). 1990.