Gaya APA
Ashford, Norman. (1979).
Airport engineering .
:
John Wiley & Sons.
Gaya Chicago
Ashford, Norman.
Airport engineering.
:
John Wiley & Sons,
1979.
Text.
Gaya MLA
Ashford, Norman.
Airport engineering.
:
John Wiley & Sons,
1979.
Text.
Gaya Turabian
Ashford, Norman.
Airport engineering.
:
John Wiley & Sons,
1979.
Print.