APA ציטוט

Vogt, W. (1946). The population of Costa Rica and its natural resources. Pan American Union.

Chicago Style (17th ed.) Citation

Vogt, William. The Population of Costa Rica and Its Natural Resources. Washington: Pan American Union, 1946.

ציטוט MLA

Vogt, William. The Population of Costa Rica and Its Natural Resources. Pan American Union, 1946.