1.
, , . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague: Academia; 1968.
, et . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague : Academia, 20 mai 1968
Malkovsky Miroslav, Štemprok Miroslav, & Congrès géologique international. (1968). Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of section 7 Endogenous ore deposits. Academia.
Style de citation MLA (8e éd.)Malkovsky Miroslav, et al. Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of Section 7 Endogenous Ore Deposits. Academia, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.