Gaya APA
Black, W.P.M.. (1979).
The strength of clay subgrades: its measurement by a penetrometer .
:
TRRL.
Gaya Chicago
Black, W.P.M..
The strength of clay subgrades: its measurement by a penetrometer.
:
TRRL,
1979.
Chart.
Gaya MLA
Black, W.P.M..
The strength of clay subgrades: its measurement by a penetrometer.
:
TRRL,
1979.
Chart.
Gaya Turabian
Black, W.P.M..
The strength of clay subgrades: its measurement by a penetrometer.
:
TRRL,
1979.
Chart.