Gaya APA
Schröder, E, [. (1947).
The marginal utility Theory in the United States of America, a critical study. Disertasi Tilnurg. .
Nijmegen:
Centrale Drukkerij.
Gaya MLA
Schröder, E.F.,, [S.J.]..
"The marginal utility Theory in the United States of America, a critical study. Disertasi Tilnurg. ".
Nijmegen:
Centrale Drukkerij,
1947.
Buku.