Gaya APA
Winfrey, Robley. (1975).
Highway Economics .
:
Van Nostrand Reinhold Co..
Gaya Chicago
Winfrey, Robley.
Highway Economics.
:
Van Nostrand Reinhold Co.,
1975.
Globe.
Gaya MLA
Winfrey, Robley.
Highway Economics.
:
Van Nostrand Reinhold Co.,
1975.
Globe.
Gaya Turabian
Winfrey, Robley.
Highway Economics.
:
Van Nostrand Reinhold Co.,
1975.
Globe.