APA (7e ed.) Bronvermelding

(1920). Operating expenses in retail shoe stores in 1919.

Chicago (17e ed.) Bronvermelding

Operating Expenses in Retail Shoe Stores in 1919. 1920.

MLA (9e ed.) Bronvermelding

Operating Expenses in Retail Shoe Stores in 1919. 1920.

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