Cita APA (7th ed.)
United Nations. (1997). On solid ground: Science, technology, and integrated land management. IDRC.
Cita Chicago (17th ed.)
United Nations. On Solid Ground: Science, Technology, and Integrated Land Management. Ottawa: IDRC, 1997.
Cita MLA (9th ed.)
United Nations. On Solid Ground: Science, Technology, and Integrated Land Management. IDRC, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.