एपीए उद्धरण

Mackollop, A. (1975). Why soft technology: Alternative solutions to the energy crisis. Methuen.

शिकागो स्टाइल उद्धरण

Mackollop, Andrew. Why Soft Technology: Alternative Solutions to the Energy Crisis. London: Methuen, 1975.

एमएलए उद्धरण

Mackollop, Andrew. Why Soft Technology: Alternative Solutions to the Energy Crisis. Methuen, 1975.