David James Press. (1987). Map & guide to Puerto Rico & the U.S. Virgin Islands (1988 Edition.). David James Press.
Chicago Style (17. basım) AtıfDavid James Press. Map & Guide to Puerto Rico & the U.S. Virgin Islands. 1988 Edition. New York: David James Press, 1987.
MLA (8th ed.) AtıfDavid James Press. Map & Guide to Puerto Rico & the U.S. Virgin Islands. 1988 Edition. David James Press, 1987.
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