Trích dẫn APA

(1969). Courage!: Personal experiences of challenge and decision in the lives of great men and women. [Kansas City, Mo.]: Hallmark Editions.

Trích dẫn kiểu Chicago

Courage!: Personal Experiences of Challenge and Decision in the Lives of Great Men and Women. [Kansas City, Mo.]: Hallmark Editions, 1969.

Trích dẫn MLA

Courage!: Personal Experiences of Challenge and Decision in the Lives of Great Men and Women. [Kansas City, Mo.]: Hallmark Editions, 1969.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.