Vollman, R. F., & Hartman, C. G. (1965). Fifty years of research on mammalian reproduction: A bibliography of the scientific publications of Carl G. Hartman. U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Vollman, Rudolf F., و Carl Gottfried Hartman. Fifty Years of Research on Mammalian Reproduction: A Bibliography of the Scientific Publications of Carl G. Hartman. [Washington]: U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.], 1965.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Vollman, Rudolf F., و Carl Gottfried Hartman. Fifty Years of Research on Mammalian Reproduction: A Bibliography of the Scientific Publications of Carl G. Hartman. U.S. Dept. of Health, Education, and Welfare, Public Health Service, National Institutes of Health [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.], 1965.