Dyfyniad APA

International Geological Congress Prague, Czechoslovakia, & Krat︠t︡s, K. O. (1968). Geologi︠i︡a dokembri︠i︡a. Izd-vo "Nauka," Leningradskoe otd-nie.

Dyfyniad Arddull Chicago

International Geological Congress Prague, Czechoslovakia, and K. O. Krat︠t︡s. Geologi︠i︡a Dokembri︠i︡a. Leningrad: Izd-vo "Nauka," Leningradskoe otd-nie, 1968.

Dyfyniad MLA

International Geological Congress Prague, Czechoslovakia, and K. O. Krat︠t︡s. Geologi︠i︡a Dokembri︠i︡a. Izd-vo "Nauka," Leningradskoe otd-nie, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.