Gaya APA
Atkins, H, N.
(1987).
Highway Materials, Soils, & Concretes
.
United States of America:
Harold N, Atkins.
Gaya MLA
Atkins, Harold, N,.
"Highway Materials, Soils, & Concretes".
United States of America:
Harold N, Atkins,
1987.
Text.