Gaya APA
Standard specification for transportation materials and methods of sampling and testing. (1982).
Washington:
American Association of State Higway.
Gaya Chicago
Standard specification for transportation materials and methods of sampling and testing.
13.
Washington:
American Association of State Higway,
1982.
Buku.
Gaya MLA
Standard specification for transportation materials and methods of sampling and testing.
13.
Washington:
American Association of State Higway,
1982.
Buku.
Gaya Turabian
Standard specification for transportation materials and methods of sampling and testing.
Washington:
American Association of State Higway,
1982.
Buku.