Gaya APA

Maldonado, E., Yannas, S. (2017). Environmentally Friendly Cities: Proceedings of Plea 98 (-). Oxon: Routledge.

Gaya MLA

Maldonado, Eduardo., Yannas, Simos. "Environmentally Friendly Cities: Proceedings of Plea 98". - Oxon: Routledge, 2017. Text.