Gaya APA
Hignett, H.J.. (1977).
Tunnelling trials in chalk: rock cutting experiments .
:
TRRL.
Gaya Chicago
Hignett, H.J..
Tunnelling trials in chalk: rock cutting experiments.
:
TRRL,
1977.
Chart.
Gaya MLA
Hignett, H.J..
Tunnelling trials in chalk: rock cutting experiments.
:
TRRL,
1977.
Chart.
Gaya Turabian
Hignett, H.J..
Tunnelling trials in chalk: rock cutting experiments.
:
TRRL,
1977.
Chart.