APA (7th ed.) Citation

Herbart, J. F., Garmo, C. d., & Lange, A. F. (2014). Outlines of Educational Doctrine. Project Gutenberg.

Chicago Style (17th ed.) Citation

Herbart, John Frederick, Charles de Garmo, and Alexis F. Lange. Outlines of Educational Doctrine. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Herbart, John Frederick, et al. Outlines of Educational Doctrine. Project Gutenberg, 2014.

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