Não informado. (2019). Newsletter. American Society of Civil Engineers, Urban Planning and Development Division.
Citação do estilo Chicago (17ª ed.)Não informado. Newsletter. New York: American Society of Civil Engineers, Urban Planning and Development Division, 2019.
Citação MLA (8ª ed.)Não informado. Newsletter. American Society of Civil Engineers, Urban Planning and Development Division, 2019.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.