"authors","title","secondary title or journal name","volume","issue no.","start page","end page","publisher","publication year"
"Coward, Raymond T.; Cutler, Stephen J.; Schmidt, Frederick E.","Differences in the household xomposition of elders by age, gender, and area of residence","Gerontologist","29","6","814","821","","1989"
"Schmertmann, Carl P.; Boyd, Monica; Serow, William; White, Douglas","Elder-Child Coresidence in the United States","Research on Aging","22","1","23","42","","2000"