Joseph E. Gaugler, Nader Hanna, Jeanette Linder, Charles W. Given, Valerie Tolbert, Ritesh Kataria, William F. Regine,
Cancer caregiving and subjective stress: a multi-site, multi-dimensional analysis. Psycho-oncology. ,vol. 14, pp. 771- 785 ,(2005) ,
10.1002/PON.916