APA (7th ed.) Citation

Campbell, D. B., & Hudson, W. R. (1969). The determination of soil properties in situ. Center for Highway Research.

Chicago Style (17th ed.) Citation

Campbell, David B., and W. Ronald Hudson. The Determination of Soil Properties in Situ. Austin: Center for Highway Research, 1969.

MLA (9th ed.) Citation

Campbell, David B., and W. Ronald Hudson. The Determination of Soil Properties in Situ. Center for Highway Research, 1969.