Citazione Stile APA (7a Edizione)

Berlage, L. (1975). On the mathematics of economic aid. St. Ignatius Faculties.

Citazione stile Chigago Style (17a edizione)

Berlage, L. On the Mathematics of Economic Aid. Antwerp, Belgium: St. Ignatius Faculties, 1975.

Citatione MLA (9a ed.)

Berlage, L. On the Mathematics of Economic Aid. St. Ignatius Faculties, 1975.