Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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