Gaya APA
Ernst, W.G.. (1969).
Earth materials / W.G. Ernst .
:
Englewood Cliffs : Prentice-Hall.
Gaya Chicago
Ernst, W.G..
Earth materials / W.G. Ernst.
:
Englewood Cliffs : Prentice-Hall,
1969.
Buku.
Gaya MLA
Ernst, W.G..
Earth materials / W.G. Ernst.
:
Englewood Cliffs : Prentice-Hall,
1969.
Buku.
Gaya Turabian
Ernst, W.G..
Earth materials / W.G. Ernst.
:
Englewood Cliffs : Prentice-Hall,
1969.
Buku.