Gaya APA
Morris, Ruby Tunner. (1961).
Fundamentals economics .
New York:
The Ronald Press.
Gaya Chicago
Morris, Ruby Tunner.
Fundamentals economics.
New York:
The Ronald Press,
1961.
Text.
Gaya MLA
Morris, Ruby Tunner.
Fundamentals economics.
New York:
The Ronald Press,
1961.
Text.
Gaya Turabian
Morris, Ruby Tunner.
Fundamentals economics.
New York:
The Ronald Press,
1961.
Print.