Gaya APA
Whitehead, Geoffey. (1992).
Economics (14th. ed.).
Hoboken, NJ:
Made Simple Books.
Gaya Chicago
Whitehead, Geoffey.
Economics.
14th. ed.
Hoboken, NJ:
Made Simple Books,
1992.
.
Gaya MLA
Whitehead, Geoffey.
Economics.
14th. ed.
Hoboken, NJ:
Made Simple Books,
1992.
.
Gaya Turabian
Whitehead, Geoffey.
Economics.
14th. ed.
Hoboken, NJ:
Made Simple Books,
1992.
.