APA način citiranja

Sierra Franco, A., & Guevara Guevara, O. (2016). Visual pollution in historical centers: An aesthetic problem and of social value of the present cities. Corporación Universitaria del Caribe, CECAR.

Čikaški stil citiranja

Sierra Franco, Angélica, i Oscar Guevara Guevara. Visual Pollution in Historical Centers: An Aesthetic Problem and of Social Value of the Present Cities. Corporación Universitaria del Caribe, CECAR, 2016.

MLA način citiranja

Sierra Franco, Angélica, i Oscar Guevara Guevara. Visual Pollution in Historical Centers: An Aesthetic Problem and of Social Value of the Present Cities. Corporación Universitaria del Caribe, CECAR, 2016.