Spar, M. A., & Martin, J. H. (1983). Housing units authorized in Virginia's planning districts, counties, and cities: 1st and 2nd quarters, 1982. University of Virginia, Colgate Darden School of Business Administration, Tayloe Murphy Institute.
Chicago Style (17. basım) AtıfSpar, Michael A., ve Julia H. Martin. Housing Units Authorized in Virginia's Planning Districts, Counties, and Cities: 1st and 2nd Quarters, 1982. Charlottesville, Va.: University of Virginia, Colgate Darden School of Business Administration, Tayloe Murphy Institute, 1983.
MLA (8th ed.) AtıfSpar, Michael A., ve Julia H. Martin. Housing Units Authorized in Virginia's Planning Districts, Counties, and Cities: 1st and 2nd Quarters, 1982. University of Virginia, Colgate Darden School of Business Administration, Tayloe Murphy Institute, 1983.