APA (7. basım) Alıntı

HALM,George. (1951). Economic Systems - George N.Halm. Rinehart&Company,Inc.

Chicago Style (17. basım) Atıf

HALM,George. Economic Systems - George N.Halm. Rinehart&Company,Inc, 1951.

MLA (8th ed.) Atıf

HALM,George. Economic Systems - George N.Halm. Rinehart&Company,Inc, 1951.