United Nations Educational, Scientific and Cultural Organization (UNESCO). (1980). Proceedings of the workshop on the phenomenon known as "El Nino" Guayaquil, Ecuador 4-12 December 1974. United Nations Educational Scientific and Cultural Organization.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United Nations Educational, Scientific and Cultural Organization (UNESCO). Proceedings of the Workshop on the Phenomenon Known as "El Nino" Guayaquil, Ecuador 4-12 December 1974. Paris, France: United Nations Educational Scientific and Cultural Organization, 1980.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)United Nations Educational, Scientific and Cultural Organization (UNESCO). Proceedings of the Workshop on the Phenomenon Known as "El Nino" Guayaquil, Ecuador 4-12 December 1974. United Nations Educational Scientific and Cultural Organization, 1980.