Gaya APA
MORRIS, P, A. (1975).
A FIELD GUIDE TO SHELLS: OF THE ATLANTIC GULF COASTS AND THE WEST INDIES (EDISI 3).
NEW HAVEN:
HOUNGTON MIFFLIN COMPANY BOSTON.
Gaya MLA
MORRIS, PERCY, A..
"A FIELD GUIDE TO SHELLS: OF THE ATLANTIC GULF COASTS AND THE WEST INDIES".
EDISI 3
NEW HAVEN:
HOUNGTON MIFFLIN COMPANY BOSTON,
1975.
Book.