Gaya APA
Leftwich, Richard H.. (1969).
An Introduction to Economic Thinking .
New York:
Holt, Rinehart and Winston Inc.
Gaya Chicago
Leftwich, Richard H..
An Introduction to Economic Thinking.
New York:
Holt, Rinehart and Winston Inc,
1969.
Buku Teks.
Gaya MLA
Leftwich, Richard H..
An Introduction to Economic Thinking.
New York:
Holt, Rinehart and Winston Inc,
1969.
Buku Teks.
Gaya Turabian
Leftwich, Richard H..
An Introduction to Economic Thinking.
New York:
Holt, Rinehart and Winston Inc,
1969.
Buku Teks.