APA

Pan American Union, . (1969). Mining and petroleum legislation in Latin America. Washington: Pan American Union.

Chicago

Pan American Union, . 1969. Mining and petroleum legislation in Latin America. Washington: Pan American Union.

Harvard

Pan American Union, . (1969). Mining and petroleum legislation in Latin America. Washington: Pan American Union.

MLA

Pan American Union, . Mining and petroleum legislation in Latin America. Washington: Pan American Union. 1969.