Παραπομπή σε μορφή APA (7η εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. (1958). Some relationships between U. S. consumption and natural resources, 1899, 1947, 1954.

Παραπομπή σε μορφή Chicago (17η εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. Some Relationships Between U. S. Consumption and Natural Resources, 1899, 1947, 1954. College Park, 1958.

Παραπομπή σε μορφή MLA (8th εκδ.)

University of Maryland, College Park. Bureau of Business and Economic Research. Some Relationships Between U. S. Consumption and Natural Resources, 1899, 1947, 1954. 1958.