1. International journal of nursing sciences. Singapore : Elsevier (Singapore) Pte Ltd., [2014]- SW360
2. International journal of environmental research and public health. Basel : Molecular Diversity Preservation International, ©2004- ATP503 SW526 SW509 ECON336 SW421 SW470 ATP510 COUN380 PSY209 GEB102 SW290
3. The international journal of aging and human development. Amityville, NY : Baywood Pub. Co. PSY120
