Osterbur, E. F. (2015). Annual editions: Aging, 28/e (Twenty-eigth edition.). McGraw-Hill Education Create.
Citace podle Chicago (17th ed.)Osterbur, Elaina F. Annual Editions: Aging, 28/e. Twenty-eigth edition. [Place of publication not identified]: McGraw-Hill Education Create, 2015.
Citace podle MLA (9th ed.)Osterbur, Elaina F. Annual Editions: Aging, 28/e. Twenty-eigth edition. McGraw-Hill Education Create, 2015.
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