International Geological Congress Copenhagen, Denmark, & Sorgenfrei, T. (1960). Report of the twenty-first session, Norden: Denmark, Finland, Iceland, Norway, Sweden, 1960. Berlingske bogtr..
Chicago Style (17th ed.) CitationInternational Geological Congress Copenhagen, Denmark, and Theodor Sorgenfrei. Report of the Twenty-first Session, Norden: Denmark, Finland, Iceland, Norway, Sweden, 1960. Copenhagen: Berlingske bogtr., 1960.
MLA引文International Geological Congress Copenhagen, Denmark, and Theodor Sorgenfrei. Report of the Twenty-first Session, Norden: Denmark, Finland, Iceland, Norway, Sweden, 1960. Berlingske bogtr., 1960.
警告:這些引文格式不一定是100%准確.