Citazione APA

Packard, L. O., & Overton, B. (1946). Text-workbook on the geography of World War II. Macmillan.

Stile di citazione Chicago

Packard, Leonard Oscar, e Bruce Overton. Text-workbook on the Geography of World War II. New York: Macmillan, 1946.

Citazione MLA

Packard, Leonard Oscar, e Bruce Overton. Text-workbook on the Geography of World War II. Macmillan, 1946.