Umbgrove, J. (1950). Symphony of the earth. Martinus Nijhoff.
Chicago Style CitationUmbgrove, JHF. Symphony of the Earth. Martinus Nijhoff, 1950.
MLA CitationUmbgrove, JHF. Symphony of the Earth. Martinus Nijhoff, 1950.
Warning: These citations may not always be 100% accurate.