APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.