APA
Burke W., Gabriels D. & Bouma J. (1986). Soil structure assessment. : Commission of the European Communities.
Chicago
Burke W, Gabriels D and Bouma J. 1986. Soil structure assessment. : Commission of the European Communities.
Harvard
Burke W., Gabriels D. and Bouma J. (1986). Soil structure assessment. : Commission of the European Communities.
MLA
Burke W, Gabriels D and Bouma J. Soil structure assessment. : Commission of the European Communities. 1986.