Gaya APA

G, R., Packard, P, E. (1995). THICHKNESS Design for Concrete Highway and Street Pavements . United States of America: Portland Cement Association.

Gaya MLA

G, Robert., Packard, P., E. "THICHKNESS Design for Concrete Highway and Street Pavements". United States of America: Portland Cement Association, 1995. Electronic Resource.