Gaya APA
West, A.S.. (1972).
Piling Practice .
:
Butterworths.
Gaya Chicago
West, A.S..
Piling Practice.
:
Butterworths,
1972.
Text.
Gaya MLA
West, A.S..
Piling Practice.
:
Butterworths,
1972.
Text.
Gaya Turabian
West, A.S..
Piling Practice.
:
Butterworths,
1972.
Print.