Παραπομπή APA

Douglas,Sholto J. (1975). Hydroponics: The Bengal system with notes on other methods of soilless cultivation. Oxford university press.

Παραπομπή Chicago Style

Douglas,Sholto J. Hydroponics: The Bengal System with Notes on Other Methods of Soilless Cultivation. Bombay: Oxford university press, 1975.

Παραπομπή MLA

Douglas,Sholto J. Hydroponics: The Bengal System with Notes on Other Methods of Soilless Cultivation. Oxford university press, 1975.