Não informado. (1980). Environmental Technology Letters. Science and Technology Letters.
Chicagoスタイル(17版)引用形式Não informado. Environmental Technology Letters. London: Science and Technology Letters, 1980.
MLA(8版)引用形式Não informado. Environmental Technology Letters. Science and Technology Letters, 1980.
警告: この引用は必ずしも正確ではありません.