APA

Pan American Union, . (1943). Copyright protection in the Americas under national legislation and inter-American treaties. Washington, D.C: Pan American Union.

Chicago

Pan American Union, . 1943. Copyright protection in the Americas under national legislation and inter-American treaties. Washington, D.C: Pan American Union.

Harvard

Pan American Union, . (1943). Copyright protection in the Americas under national legislation and inter-American treaties. Washington, D.C: Pan American Union.

MLA

Pan American Union, . Copyright protection in the Americas under national legislation and inter-American treaties. Washington, D.C: Pan American Union. 1943.