APA (7e ed.) Bronvermelding

Não informado. (1940). Labor market and employment security. Bureau of Employment Security.

Chicago (17e ed.) Bronvermelding

Não informado. Labor Market and Employment Security. Washington: Bureau of Employment Security, 1940.

MLA (8e ed.) Bronvermelding

Não informado. Labor Market and Employment Security. Bureau of Employment Security, 1940.

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