एपीए उद्धरण

Pratt, A. (1978). Directory of Waste Disposal and Recovery. Geprge Godwin.

शिकागो स्टाइल उद्धरण

Pratt, Alan. Directory of Waste Disposal and Recovery. London: Geprge Godwin, 1978.

एमएलए उद्धरण

Pratt, Alan. Directory of Waste Disposal and Recovery. Geprge Godwin, 1978.