Não informado. (1919). Fertiliser, feeding stuffs and farm supplies journal. Association of British Organic Fertilisers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Fertiliser, Feeding Stuffs and Farm Supplies Journal. London: Association of British Organic Fertilisers, 1919.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Fertiliser, Feeding Stuffs and Farm Supplies Journal. Association of British Organic Fertilisers, 1919.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.