Cita APA (7a ed.)

engert, m. (1964). classification of industries in social countries. the institute of national planning.

Cita Chicago Style (17a ed.)

engert, manfred. Classification of Industries in Social Countries. cairo: the institute of national planning, 1964.

Cita MLA (9a ed.)

engert, manfred. Classification of Industries in Social Countries. the institute of national planning, 1964.