Παραπομπή σε μορφή APA (7η εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. (1949). Baltimore: some economic indicators: Comparisons with other cities, relation to State of Maryland.

Παραπομπή σε μορφή Chicago (17η εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. Baltimore: Some Economic Indicators: Comparisons with Other Cities, Relation to State of Maryland. College Park, 1949.

Παραπομπή σε μορφή MLA (8th εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. Baltimore: Some Economic Indicators: Comparisons with Other Cities, Relation to State of Maryland. 1949.