APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.