Gan, Daniel R. Y.; Fung, John Chye; Cho, Im Sik (2019). „Neighborhood Experiences of People Over Age 50: Factor Structure and Validity of a Scale”. The Gerontologist. 60 (8): e559—e571. PMID31504478. doi:10.1093/geront/gnz111.
Gan, Daniel R. Y.; Fung, John Chye; Cho, Im Sik (2019). „Neighborhood Experiences of People Over Age 50: Factor Structure and Validity of a Scale”. The Gerontologist. 60 (8): e559—e571. PMID31504478. doi:10.1093/geront/gnz111.