Cita APA (7a ed.)
McKenzie, S. C. (1980). Aging and old age. Scott, Foresman.
Cita Chicago Style (17a ed.)
McKenzie, Sheila C. Aging and Old Age. Glenview, Ill.: Scott, Foresman, 1980.
Cita MLA (9a ed.)
McKenzie, Sheila C. Aging and Old Age. Scott, Foresman, 1980.
Precaución: Estas citas no son 100% exactas.