Não informado. (1955). Fertiliser and feeding stuffs journal. Association of British Organic Fertilisers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Fertiliser and Feeding Stuffs Journal. London: Association of British Organic Fertilisers, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Fertiliser and Feeding Stuffs Journal. Association of British Organic Fertilisers, 1955.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.