APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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