Basic documents (excluding the technical regulations).
APA Citation
World Meteorological Organization. (1971). Basic documents (excluding the technical regulations). Ed. 1971. Geneva: Secretariat of the World Meteorlogical Organization.
MLA Citation
World Meteorological Organization. Basic Documents (excluding the Technical Regulations). Ed. 1971. Geneva: Secretariat of the World Meteorlogical Organization, 1971.
Warning: These citations may not always be complete (especially for serials).