Não informado. (1985). WASTE TREATMENT TECHNOLOGY NEWS. Business Communications.
Chicago-viite (17. p.)Não informado. WASTE TREATMENT TECHNOLOGY NEWS. Stanford, Conn: Business Communications, 1985.
MLA-viite (8. p.)Não informado. WASTE TREATMENT TECHNOLOGY NEWS. Business Communications, 1985.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.