Gaya APA
Higway engineering. (1996).
Sn:
John Wiley & Sons.
Gaya Chicago
Higway engineering.
6.
Sn:
John Wiley & Sons,
1996.
Buku.
Gaya MLA
Higway engineering.
6.
Sn:
John Wiley & Sons,
1996.
Buku.
Gaya Turabian
Higway engineering.
Sn:
John Wiley & Sons,
1996.
Buku.