एपीए उद्धरण

Toulmin, S., & Goodfield, J. (1961). The fabric of the heavens. Penguin Books ltd.

शिकागो स्टाइल उद्धरण

Toulmin, Stephen, और June Goodfield. The Fabric of the Heavens. Hermondsworth: Penguin Books ltd, 1961.

एमएलए उद्धरण

Toulmin, Stephen, और June Goodfield. The Fabric of the Heavens. Penguin Books ltd, 1961.