Kirkwood, R. C., Longley, A. J., Kirwood, R. C., & Longley, A. J. (1995). Clean technology and the environment. London: Blackie Academic & Professional.
Παραπομπή Chicago StyleKirkwood, R. C., A. J. Longley, R. C. Kirwood, and A. J. Longley. Clean Technology and the Environment. London: Blackie Academic & Professional, 1995.
Παραπομπή MLAKirkwood, R. C., A. J. Longley, R. C. Kirwood, and A. J. Longley. Clean Technology and the Environment. London: Blackie Academic & Professional, 1995.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.