APA (7th ed.) Citation

Hagedoorn, A. L., & Hagedoorn, A. C. (1921). The relative value of the processes causing evolution. M. Nijhoff.

Chicago Style (17th ed.) Citation

Hagedoorn, Arend L., and Anna Cornelia Hagedoorn. The Relative Value of the Processes Causing Evolution. The Hague: M. Nijhoff, 1921.

MLA (9th ed.) Citation

Hagedoorn, Arend L., and Anna Cornelia Hagedoorn. The Relative Value of the Processes Causing Evolution. M. Nijhoff, 1921.

Warning: These citations may not always be 100% accurate.