Copeland, A. P., & White, K. M. (1991). Studying families. Sage Publications.
Dyfyniad Arddull ChicagoCopeland, Anne P., and Kathleen M. White. Studying Families. Newbury Park, Calif.: Sage Publications, 1991.
Dyfyniad MLACopeland, Anne P., and Kathleen M. White. Studying Families. Sage Publications, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.