1.
, , . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague: Academia; 1968.
, et . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague : Academia, 12 juin 1968
Malkovsky Miroslav, Hejtman Bohuslav, & Congrès géologique international. (1968). Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of section 4 Geology of pre-cambrian. Academia.
Style de citation MLA (8e éd.)Malkovsky Miroslav, et al. Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of Section 4 Geology of Pre-cambrian. Academia, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.