APA (7e ed.) Bronvermelding

Hollingworth, H. L. Vocational Psychology: Its Problems and Methods.

Chicago (17e ed.) Bronvermelding

Hollingworth, Harry L. Vocational Psychology: Its Problems and Methods.

MLA (9e ed.) Bronvermelding

Hollingworth, Harry L. Vocational Psychology: Its Problems and Methods.

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