You may find some useful information in these excellent books.
36 Hour Day by Nancy L. Mace, Peter V. Rabins,
Paul R. McHugh
36 Hour Day : A Family Guide to Caring for Persons With Alzheimer's Disease, Related Dementing Illnesses, and Memory Loss in Later Life. A Good book for both professionals and lay people.
Stop Memory Loss: How to Fight Forgetfulness over Forty
by William Cone
Very comprehensive book explaining memory loss. Clearly defines the difference between memory loss in people suffering from dementia and the “normal” memory loss during the aging process.
Alzheimer's: A Caregiver's Guide and Sourcebook
by Howard Gruetzner
Provides an excellent understanding of Alzheimer's Disease.
How to Care for Aging Parents
by Virginia Morris, Robert Butle
Excellent, comprehensive and easy to read. Everyine caring for an elderly loved-one should have this book.
Alzheimer's Disease: A Handbook for Caregivers
by R. C. Hamdy (Editor),
James M. Turnball (Editor),
Joellyn Edwards (Editor),
Mary Lancaster (Editor)
An excellent text book, often used for continuing education courses.