1. American Nurses Association. (1980). Gerontological nursing: The positive difference in healthcare for older adults. Kansas City: American Nurses Association.
2. American Nurses Association. (1982a). A challenge for change: The role of gerontological nursing. Kansas City: American Nurses Association.
3. American Nurses Association. (1982b). A statement on the scope of gerontological nursing practice. Kansas City: American Nurses Association.
4. American Psychological Association (APA). (1995). Principles for recognition of proficiencies in professional psychology. Washington, DC: Author.
5. American Psychological Association (APA). (2004). Guidelines for psychological practice with older adults. American Psychologist, 59(4), 236–260.