APA citáció

Koch Sándor & Grasselly Gyula. (1951). The Manganese ore mineral occurrences of Hungary. Szeged.

Chicago Style (17th ed.) Citation

Koch Sándor and Grasselly Gyula. The Manganese Ore Mineral Occurrences of Hungary. University of Szeged, Department of Mineralogy, Geochemistry and Petrology: Szeged, 1951.

MLA idézés

Koch Sándor and Grasselly Gyula. The Manganese Ore Mineral Occurrences of Hungary. Szeged, 1951.