APA (7e ed.) Bronvermelding

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 (17e ed.) Bronvermelding

Spar, Michael A., en 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 (8e ed.) Bronvermelding

Spar, Michael A., en 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.