Citazione APA

United Nations Industrial Development Organization. (1972). The manufacture and utilizatin of portland cement. New York: United Nations.

Stile di citazione Chicago

United Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.

Citazione MLA

United Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.