Krach, W. (1969). Mollusca of the Babica clays (Paleocene) of the Middle Carpathians. Wydawn. Geologiczne.
Chicago Style (17th ed.) CitationKrach, Wilhelm. Mollusca of the Babica Clays (Paleocene) of the Middle Carpathians. Warszawa: Wydawn. Geologiczne, 1969.
MLA (9th ed.) CitationKrach, Wilhelm. Mollusca of the Babica Clays (Paleocene) of the Middle Carpathians. Wydawn. Geologiczne, 1969.
Warning: These citations may not always be 100% accurate.