(1969). Courage!: Personal experiences of challenge and decision in the lives of great men and women. [Kansas City, Mo.]: Hallmark Editions.
Styl cytowania ChicagoCourage!: Personal Experiences of Challenge and Decision in the Lives of Great Men and Women. [Kansas City, Mo.]: Hallmark Editions, 1969.
Styl cytowania MLACourage!: Personal Experiences of Challenge and Decision in the Lives of Great Men and Women. [Kansas City, Mo.]: Hallmark Editions, 1969.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..