Não informado. (1989). The Engineering index bioengineering and biotechnology abstracts. Engineering Information.
Citação do estilo Chicago (17ª ed.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. New York: Engineering Information, 1989.
Citação MLA (8ª ed.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. Engineering Information, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.