APA
Seminar for Structural Engineers of London Boroughs, . (1990). The effects of trees on foundations in clay sub-soils. London: SEMSELB.
Chicago
Seminar for Structural Engineers of London Boroughs, . 1990. The effects of trees on foundations in clay sub-soils. London: SEMSELB.
Harvard
Seminar for Structural Engineers of London Boroughs, . (1990). The effects of trees on foundations in clay sub-soils. London: SEMSELB.
MLA
Seminar for Structural Engineers of London Boroughs, . The effects of trees on foundations in clay sub-soils. London: SEMSELB. 1990.