APA (7th ed.) Citation

Nicolay, H. (2006). Personal Traits of Abraham Lincoln. Stackpole Books.

Chicago Style (17th ed.) Citation

Nicolay, Helen. Personal Traits of Abraham Lincoln. Mechanicsb urg: Stackpole Books, 2006.

MLA (9th ed.) Citation

Nicolay, Helen. Personal Traits of Abraham Lincoln. Stackpole Books, 2006.