Gaya APA
The Penetrometer and Soil Exploration. (1972).
:
.
Gaya Chicago
The Penetrometer and Soil Exploration.
.
:
,
1972.
Text.
Gaya MLA
The Penetrometer and Soil Exploration.
.
:
,
1972.
Text.
Gaya Turabian
The Penetrometer and Soil Exploration.
:
,
1972.
Print.