Gaya APA
Margason, G.. (1970).
A preliminary study of the cost of tunnel construction .
:
TRRL.
Gaya Chicago
Margason, G..
A preliminary study of the cost of tunnel construction.
:
TRRL,
1970.
Chart.
Gaya MLA
Margason, G..
A preliminary study of the cost of tunnel construction.
:
TRRL,
1970.
Chart.
Gaya Turabian
Margason, G..
A preliminary study of the cost of tunnel construction.
:
TRRL,
1970.
Chart.