Gaya APA
Mabry, Rodney H, Ulbrich, Holley H. (1989).
Introduction to economic principles .
New York:
McGraw Hill.
Gaya Chicago
Mabry, Rodney H, Ulbrich, Holley H.
Introduction to economic principles.
New York:
McGraw Hill,
1989.
Buku.
Gaya MLA
Mabry, Rodney H, Ulbrich, Holley H.
Introduction to economic principles.
New York:
McGraw Hill,
1989.
Buku.
Gaya Turabian
Mabry, Rodney H, Ulbrich, Holley H.
Introduction to economic principles.
New York:
McGraw Hill,
1989.
Buku.