Gaya APA
Practical foundation engineering. (2000).
New York:
Mc Graw Hill.
Gaya Chicago
Practical foundation engineering.
.
New York:
Mc Graw Hill,
2000.
Tesis.
Gaya MLA
Practical foundation engineering.
.
New York:
Mc Graw Hill,
2000.
Tesis.
Gaya Turabian
Practical foundation engineering.
New York:
Mc Graw Hill,
2000.
Tesis.