Παραπομπή APA

Grothe, H. (1960). Feasibility study regarding the technical and economical possibilities of establishing a zinc smelter in Greece. Uberlingen: [s.n.].

Παραπομπή Chicago Style

Grothe, H. Feasibility Study Regarding the Technical and Economical Possibilities of Establishing a Zinc Smelter in Greece. Uberlingen: [s.n.], 1960.

Παραπομπή MLA

Grothe, H. Feasibility Study Regarding the Technical and Economical Possibilities of Establishing a Zinc Smelter in Greece. Uberlingen: [s.n.], 1960.

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