Cita APA (7a ed.)

Eichhorn, W. (1982). Economic theory of natural resources. Physica-Verlag.

Cita Chicago Style (17a ed.)

Eichhorn, W. Economic Theory of Natural Resources. Wurzburg: Physica-Verlag, 1982.

Cita MLA (9a ed.)

Eichhorn, W. Economic Theory of Natural Resources. Physica-Verlag, 1982.