1.
, , . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague: Academia; 1968.
, et . Report of the Twenty-Third Session, Czechoslovakia, 1968. Prague : Academia, 19 mai 1968
Malkovsky Miroslav, Tejkal Jíří, & Congrès géologique international. (1968). Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of section 10 Tertiary-Quaternary boundary. Academia.
MLA (8th ed.) CitationMalkovsky Miroslav, et al. Report of the Twenty-Third Session, Czechoslovakia, 1968: Proceedings of Section 10 Tertiary-Quaternary Boundary. Academia, 1968.
Warning: These citations may not always be 100% accurate.