Citação norma APA

omar, a. (1970). on the maintance of a system of machines by one repairman. the institute of national planning.

Citação norma Chicago

omar, ahmed. On the Maintance of a System of Machines by One Repairman. cairo: the institute of national planning, 1970.

Citação norma MLA

omar, ahmed. On the Maintance of a System of Machines by One Repairman. the institute of national planning, 1970.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.