Gaya APA
Head, K.H.. (1980).
Manual of soil laboratory testing .
:
Pentech Press.
Gaya Chicago
Head, K.H..
Manual of soil laboratory testing.
:
Pentech Press,
1980.
Art Original.
Gaya MLA
Head, K.H..
Manual of soil laboratory testing.
:
Pentech Press,
1980.
Art Original.
Gaya Turabian
Head, K.H..
Manual of soil laboratory testing.
:
Pentech Press,
1980.
Art Original.