Gaya APA

Swanson, C, P., Cheal,David, . (NULL). Family and the state of theory . British:: British: Harvester Wheatsheaf; 1991.

Gaya MLA

Swanson, Carl, P.., Cheal,David, . "Family and the state of theory". British:: British: Harvester Wheatsheaf; 1991, NULL. Text.