The forts of old San Juan :
San Juan National Historic Site, Puerto Rico /
produced by the Division of Publications, National Park Service.
APA Citation
United States. National Park Service. Division of Publications. (1998). The forts of old San Juan: San Juan National Historic Site, Puerto Rico. Washington, D.C.: U.S. Dept. of the Interior .
MLA Citation
United States. National Park Service. Division of Publications. The Forts of Old San Juan: San Juan National Historic Site, Puerto Rico. Washington, D.C.: U.S. Dept. of the Interior , 1998.
Warning: These citations may not always be complete (especially for serials).