Não informado. (1989). The Engineering index bioengineering and biotechnology abstracts. Engineering Information.
Chicago-viite (17. p.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. New York: Engineering Information, 1989.
MLA-viite (8. p.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. Engineering Information, 1989.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.