Curtin, J., & Walker, G. (1972). Population projections: A manual for planners. An Foras Forbartha, St. Martin's House.
Chicago Style (17th ed.) CitationCurtin, J.V, and G.A Walker. Population Projections: A Manual for Planners. Dublin: An Foras Forbartha, St. Martin's House, 1972.
MLA (9th ed.) CitationCurtin, J.V, and G.A Walker. Population Projections: A Manual for Planners. An Foras Forbartha, St. Martin's House, 1972.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.