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.
Čikaški stil citiranja (17. izdanje)Spar, Michael A., i 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 način citiranja (8. izdanje)Spar, Michael A., i 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.