Gaya APA
D.Ph,Crocc.B.Ira. (1935).
Economics .
New York:
Concord.
Gaya Chicago
D.Ph,Crocc.B.Ira.
Economics.
New York:
Concord,
1935.
Media Cetak.
Gaya MLA
D.Ph,Crocc.B.Ira.
Economics.
New York:
Concord,
1935.
Media Cetak.
Gaya Turabian
D.Ph,Crocc.B.Ira.
Economics.
New York:
Concord,
1935.
Media Cetak.