APA

American Concrete Institute A., ACI 325.9R-91, . (1991). Guide for construction of concrete pavements and concrete bases. Detroit, MI: American Concrete Institute, ACI.

Chicago

American Concrete Institute ACI, ACI 325.9R-91, . 1991. Guide for construction of concrete pavements and concrete bases. Detroit, MI: American Concrete Institute, ACI.

Harvard

American Concrete Institute A., ACI 325.9R-91, . (1991). Guide for construction of concrete pavements and concrete bases. Detroit, MI: American Concrete Institute, ACI.

MLA

American Concrete Institute ACI, ACI 325.9R-91, . Guide for construction of concrete pavements and concrete bases. Detroit, MI: American Concrete Institute, ACI. 1991.