Gaya APA
Atkins, H, N. (1997).
Highway materials, soils, and concretes (3rd ed.).
United States of America:
Prentice-Hall.
Gaya MLA
Atkins, Harold, N..
"Highway materials, soils, and concretes".
3rd ed.
United States of America:
Prentice-Hall,
1997.
Printed Book.