Gaya APA

Blanchfield, W, , , C, , &, O, J. (1973). Economics Reality Through Theory . United States of America: Harcourt Brace Jovanovich, INC.

Gaya MLA

Blanchfield, William, , , C, , &, Oser,, Jacob. "Economics Reality Through Theory". United States of America: Harcourt Brace Jovanovich, INC, 1973. Text.