APA (7th ed.) Citation

De Morgan, A. (2012). On the study and difficulties of mathematics. Project Gutenberg.

Chicago Style (17th ed.) Citation

De Morgan, Augustus. On the Study and Difficulties of Mathematics. Project Gutenberg, 2012.

MLA (9th ed.) Citation

De Morgan, Augustus. On the Study and Difficulties of Mathematics. Project Gutenberg, 2012.

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