Gaya APA
Committee, A. (1991).
ACI 325.9R-91 Guide For Construction Of Concrete Pavements And Concrete Bases .
America:
ACI.
Gaya MLA
Committee, ACI.
"ACI 325.9R-91 Guide For Construction Of Concrete Pavements And Concrete Bases".
America:
ACI,
1991.
Text.