Chapin, F. S., & Hightower, H. C. (1966). Household activity systems: A pilot investigation. Center for Urban and Regional Studies, Institute for Research in Social Science, University of North Carolina.
Chicago-referens (17:e uppl.)Chapin, Francis Stuart, och Henry C. Hightower. Household Activity Systems: A Pilot Investigation. Chapel Hill: Center for Urban and Regional Studies, Institute for Research in Social Science, University of North Carolina, 1966.
MLA-referens (9:e uppl.)Chapin, Francis Stuart, och Henry C. Hightower. Household Activity Systems: A Pilot Investigation. Center for Urban and Regional Studies, Institute for Research in Social Science, University of North Carolina, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.