First Inter-American Port and Harbor Conference, San José, Costa Rica, April 25 - May 3, 1956 :
final act.

APA Citation

Organization of American States., Pan American Union., Inter-American Port and Harbor Conference. (1962). First Inter-American Port and Harbor Conference, San José, Costa Rica, April 25 - May 3, 1956: final act. 2nd. printing. Washington, DC: Pan American Union.

MLA Citation

Organization of American States, Pan American Union, and Inter-American Port and Harbor Conference. First Inter-American Port And Harbor Conference, San José, Costa Rica, April 25 - May 3, 1956: Final Act. 2nd. printing. Washington, DC: Pan American Union, 1962.

Warning: These citations may not always be complete (especially for serials).