Douglas, J. S. (1976). Advanced guide to Hydroponics ( Soilless Cultivation ). Pelham Books.
Chicago Edition CitationDouglas, James Sholto. Advanced Guide to Hydroponics ( Soilless Cultivation ). London: Pelham Books, 1976.
MLA Edition CitationDouglas, James Sholto. Advanced Guide to Hydroponics ( Soilless Cultivation ). Pelham Books, 1976.
Warning: These citations may not always be 100% accurate.