Gaya APA
Black, John D.. (1963).
Economics for agriculture selected writings of John D. Black. edited by James Piere Cavin with introduction essays .
Cambridge:
Harvard University Press.
Gaya Chicago
Black, John D..
Economics for agriculture selected writings of John D. Black. edited by James Piere Cavin with introduction essays.
Cambridge:
Harvard University Press,
1963.
Text.
Gaya MLA
Black, John D..
Economics for agriculture selected writings of John D. Black. edited by James Piere Cavin with introduction essays.
Cambridge:
Harvard University Press,
1963.
Text.
Gaya Turabian
Black, John D..
Economics for agriculture selected writings of John D. Black. edited by James Piere Cavin with introduction essays.
Cambridge:
Harvard University Press,
1963.
Print.