Cita APA (7a ed.)

David James Press. (1986). Map & guide to Puerto Rico & the U.S. Virgin Islands (1987 Edition.). David James Press.

Cita Chicago Style (17a ed.)

David James Press. Map & Guide to Puerto Rico & the U.S. Virgin Islands. 1987 Edition. New York: David James Press, 1986.

Cita MLA (8a ed.)

David James Press. Map & Guide to Puerto Rico & the U.S. Virgin Islands. 1987 Edition. David James Press, 1986.