APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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