Nicolay, H. (2006). Personal Traits of Abraham Lincoln. Stackpole Books.
Chicagoスタイル(17版)引用形式Nicolay, Helen. Personal Traits of Abraham Lincoln. Mechanicsb urg: Stackpole Books, 2006.
MLA(9版)引用形式Nicolay, Helen. Personal Traits of Abraham Lincoln. Stackpole Books, 2006.
警告: この引用は必ずしも正確ではありません.