Não informado. (1969). Solid Wastes Management Refuse Removal Journal. Communication Channels.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Solid Wastes Management Refuse Removal Journal. New York: Communication Channels, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Solid Wastes Management Refuse Removal Journal. Communication Channels, 1969.
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