Cita APA

Wellmer,Friedrich-Wilhelm. (1989). Economic evaluations in exploration. Springer - Verlag.

Citación estilo Chicago

Wellmer,Friedrich-Wilhelm. Economic Evaluations in Exploration. London: Springer - Verlag, 1989.

Cita MLA

Wellmer,Friedrich-Wilhelm. Economic Evaluations in Exploration. Springer - Verlag, 1989.