Gaya APA
Spangler, Merlin Grant. (1951).
Soil Engineering .
:
International Textbook Company.
Gaya Chicago
Spangler, Merlin Grant.
Soil Engineering.
:
International Textbook Company,
1951.
Text.
Gaya MLA
Spangler, Merlin Grant.
Soil Engineering.
:
International Textbook Company,
1951.
Text.
Gaya Turabian
Spangler, Merlin Grant.
Soil Engineering.
:
International Textbook Company,
1951.
Print.