International Federation of Landscape Architects. (1980). IFLA yearbook. International Federation of Landscape Architects, IFLA Secretariat.
Cita Chicago (17th ed.)International Federation of Landscape Architects. IFLA Yearbook. Versailles, France: International Federation of Landscape Architects, IFLA Secretariat, 1980.
Cita MLA (9th ed.)International Federation of Landscape Architects. IFLA Yearbook. International Federation of Landscape Architects, IFLA Secretariat, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.