ABECHI, E., OKUNOLA, O., ZUBAIRU, S., USMAN, A. & APENE, E. 2010. Evaluation of heavy metals in roadside soils of major streets in Jos metropolis, Nigeria. Journal of Environmental chemistry and Ecotoxicology, 2, 98-102.
ADEFOLALU, A. 1980. Transport and rural integrated development In: proceedings of the National Conference on: Integrated Rural Dev. Women Dev, 1, 294-299.
AMUSAN, A., BADA, S. & SALAMI, A. 2003. Effect of traffic density on heavy metal content of soil and vegetation along roadsides in Osun state, Nigeria. West African Journal of Applied Ecology, 4.
BAI, J. C. 2008. Assessment of heavy metal contamination of roadside soils in southeast China. Stochastic Environmental Research and Risk Assessment.
DAVIES, B. E. & HOUGHTON, N. J. 1984. Distance—Decline patterns in heavy metal contamination of soils and plants in Birmingham, England. Urban Ecology, 8, 285-294.
FRANCEK, M. A. 1992. Soil lead levels in a small town environment: a case study from Mt Pleasant, Michigan. Environmental Pollution, 76, 251-257.
GRAY, C. W., MCLAREN, R. G. & ROBERTS, A. H. 2003. Atmospheric accessions of heavy metals to some New Zealand pastoral soils. Science of the Total Environment, 305, 105-115.
HARRISON, R. M., LAXEN, D. P. & WILSON, S. J. 1981. Chemical associations of lead, cadmium, copper, and zinc in street dusts and roadside soils. Environmental Science & Technology, 15, 1378-1383.
HO, Y. & TAI, K. 1988. Elevated levels of lead and other metals in roadside soil and grass and their use to monitor aerial metal depositions in Hong Kong. Environmental pollution, 49, 37-51.
JARADAT, Q. M. & MOMANI, K. A. 1999. Contamination of roadside soil, plants, and air with heavy metals in Jordan, a comparative study. Turkish Journal of Chemistry, 23, 209-220.
LAGERWERFF, J. V. & SPECHT, A. 1970. Contamination of roadside soil and vegetation with cadmium, nickel, lead, and zinc. Environmental Science & Technology, 4, 583-586.
LI, X., POON, C.-S. & LIU, P. S. 2001. Heavy metal contamination of urban soils and street dusts in Hong Kong. Applied geochemistry, 16, 1361-1368.
MANTA, D. S., ANGELONE, M., BELLANCA, A., NERI, R. & SPROVIERI, M. 2002. Heavy metals in urban soils: a case study from the city of Palermo (Sicily), Italy. Science of the total environment, 300, 229-243.
MATEU, J., FORTEZA, R., CERDA, V. & COLOM-ALTES, M. 1995. Comparison of various methods for the determination of inorganic species in airborne atmospheric particulates. Water, Air, and Soil Pollution, 84, 61-79.
NDIOKWERE, C. L. 1984. A study of heavy metal pollution from motor vehicle emissions and its effect on roadside soil, vegetation and crops in Nigeria. Environmental Pollution Series B, Chemical and Physical, 7, 35-42.
SAKAGAMI, K., HAMADA, R. & KUROBE, T. 1982. Heavy metal contents in dust fall and soil of the National Park for Nature Study in Tokyo.