APA
Cement and Concrete Association, . (197). Trench fill foundations on the farm. London: CCA.
Chicago
Cement and Concrete Association, . 197. Trench fill foundations on the farm. London: CCA.
Harvard
Cement and Concrete Association, . (197). Trench fill foundations on the farm. London: CCA.
MLA
Cement and Concrete Association, . Trench fill foundations on the farm. London: CCA. 197.