Cita APA

Coombs, J., & Alston, Y. R. (1990). The international biotechnology directory: Products, companies research and organizations. New York, New York: Stockton Press.

Citación estilo Chicago

Coombs, J., y Y. R. Alston. The International Biotechnology Directory: Products, Companies Research and Organizations. New York, New York: Stockton Press, 1990.

Cita MLA

Coombs, J., y Y. R. Alston. The International Biotechnology Directory: Products, Companies Research and Organizations. New York, New York: Stockton Press, 1990.