एपीए उद्धरण

Engstrom, A. Symmetry and function of biological systems at the macromolecular level.

शिकागो स्टाइल उद्धरण

Engstrom, Arne. Symmetry and Function of Biological Systems at the Macromolecular Level.

एमएलए उद्धरण

Engstrom, Arne. Symmetry and Function of Biological Systems at the Macromolecular Level.