APA (7th ed.) Citation

(1910). Classification: Outline scheme of classes. Preliminary, December, 1909.

Chicago Style (17th ed.) Citation

Classification: Outline Scheme of Classes. Preliminary, December, 1909. 1910.

MLA (9th ed.) Citation

Classification: Outline Scheme of Classes. Preliminary, December, 1909. 1910.

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