APA (7th ed.) Citation

Umbgrove, J. H. F. (1950). Symphony of the earth. Nijhoff.

Chicago Style (17th ed.) Citation

Umbgrove, Johannes Herman Frederik. Symphony of the Earth. The Hague: Nijhoff, 1950.

MLA (9th ed.) Citation

Umbgrove, Johannes Herman Frederik. Symphony of the Earth. Nijhoff, 1950.