APA citáció

Pápay László. (1997). Varieties of sulphur in low-rank Hungarian coals. Szeged.

Chicago Style (17th ed.) Citation

Pápay László. Varieties of Sulphur in Low-rank Hungarian Coals. University of Szeged, Department of Mineralogy, Geochemistry and Petrology: Szeged, 1997.

MLA idézés

Pápay László. Varieties of Sulphur in Low-rank Hungarian Coals. Szeged, 1997.