Gaya APA
BILLINGS, Marland P.. (1987).
Structural Geology (3rd.ed).
New York:
Prentice-Hall Inc.
Gaya Chicago
BILLINGS, Marland P..
Structural Geology.
3rd.ed
New York:
Prentice-Hall Inc,
1987.
Teks.
Gaya MLA
BILLINGS, Marland P..
Structural Geology.
3rd.ed
New York:
Prentice-Hall Inc,
1987.
Teks.
Gaya Turabian
BILLINGS, Marland P..
Structural Geology.
3rd.ed
New York:
Prentice-Hall Inc,
1987.
Teks.