Gaya APA
Kosmatka, S, H., Kerkhoff, B. (2003).
Design and Control of Concrete Mixtures .
America:
Portland Cement Association.
Gaya MLA
Kosmatka, Steven, H.., Kerkhoff, Beatrix.
"Design and Control of Concrete Mixtures".
America:
Portland Cement Association,
2003.
Electronic Resource.