APA (7 वां संस्करण) प्रशस्ति पत्र
Burggraf, V., Kim, K. Y., Knight, A. L., Fischer, A., Bellus, M., & Druding, S. (2014). Healthy aging: Principles and clinical practice for clinicians. Wolters Kluwer.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Burggraf, Virginia, Kye Y. Kim, Aubrey L. Knight, Ashley Fischer, Marian Bellus, और Stephen Druding. Healthy Aging: Principles and Clinical Practice for Clinicians. Philadelphia, Pennsylvania: Wolters Kluwer, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Burggraf, Virginia, et al. Healthy Aging: Principles and Clinical Practice for Clinicians. Wolters Kluwer, 2014.
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