Não informado. (1966). Communication of the Department of Agricultural Research of the Royal Tropical Institute. Instituut voor de Tropen.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Communication of the Department of Agricultural Research of the Royal Tropical Institute. Amsterdam: Instituut voor de Tropen, 1966.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Communication of the Department of Agricultural Research of the Royal Tropical Institute. Instituut voor de Tropen, 1966.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.