Fisk, E. L. (1923). Health building and life extension: A discussion of the means by which the health span, the work span and the life span of man can be extended. The Macmillan Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Fisk, Eugene Lyman. Health Building and Life Extension: A Discussion of the Means by Which the Health Span, the Work Span and the Life Span of Man Can Be Extended. New York: The Macmillan Co., 1923.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Fisk, Eugene Lyman. Health Building and Life Extension: A Discussion of the Means by Which the Health Span, the Work Span and the Life Span of Man Can Be Extended. The Macmillan Co., 1923.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.