APA Citation

Castillo, L. (1982). Biological indicators of air pollution. Universidad Nacional, Costa Rica.

Chicago Style Citation

Castillo, Luisa. Biological Indicators of Air Pollution. Universidad Nacional, Costa Rica, 1982.

MLA Citation

Castillo, Luisa. Biological Indicators of Air Pollution. Universidad Nacional, Costa Rica, 1982.

Warning: These citations may not always be 100% accurate.