Não informado. (1982). Work and occupations. Lage Publications.
Chicagoスタイル(17版)引用形式Não informado. Work and Occupations. Newbury Park, Calif: Lage Publications, 1982.
MLA(8版)引用形式Não informado. Work and Occupations. Lage Publications, 1982.
警告: この引用は必ずしも正確ではありません.