Gaya APA
DUNBAR, Carl O.. (1957).
Principles of Stratigraphy .
London:
John Willey and Sons.
Gaya Chicago
DUNBAR, Carl O..
Principles of Stratigraphy.
London:
John Willey and Sons,
1957.
.
Gaya MLA
DUNBAR, Carl O..
Principles of Stratigraphy.
London:
John Willey and Sons,
1957.
.
Gaya Turabian
DUNBAR, Carl O..
Principles of Stratigraphy.
London:
John Willey and Sons,
1957.
.