Παραπομπή APA

Almgren, G., Berge, I., & Matikainen, R. (1987). Improvement of mine productivity and overall economy by modern technology. Rotterdam: Balkema.

Παραπομπή Chicago Style

Almgren, G., I. Berge, and R. Matikainen. Improvement of Mine Productivity and Overall Economy By Modern Technology. Rotterdam: Balkema, 1987.

Παραπομπή MLA

Almgren, G., I. Berge, and R. Matikainen. Improvement of Mine Productivity and Overall Economy By Modern Technology. Rotterdam: Balkema, 1987.

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