एपीए उद्धरण

Saldarriaga Roa, A. (2016). About cities: The look of yesterday and today. Corporación Universitaria del Caribe, CECAR.

शिकागो स्टाइल उद्धरण

Saldarriaga Roa, Alberto. About Cities: The Look of Yesterday and Today. Corporación Universitaria del Caribe, CECAR, 2016.

एमएलए उद्धरण

Saldarriaga Roa, Alberto. About Cities: The Look of Yesterday and Today. Corporación Universitaria del Caribe, CECAR, 2016.