APA (7th ed.) Citation

Spengel, J. W. (1874). Fortschrite Des Darwinismus. Eduard Heinrich Mayer.

Chicago Style (17th ed.) Citation

Spengel, Johann Wilhelm. Fortschrite Des Darwinismus. Leipzig: Eduard Heinrich Mayer, 1874.

MLA (8th ed.) Citation

Spengel, Johann Wilhelm. Fortschrite Des Darwinismus. Eduard Heinrich Mayer, 1874.

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