Gaya APA
Marshall, Alfred. (1972).
Principles of economics (text).
London:
Macmillan.
Gaya Chicago
Marshall, Alfred.
Principles of economics.
text
London:
Macmillan,
1972.
Tesis.
Gaya MLA
Marshall, Alfred.
Principles of economics.
text
London:
Macmillan,
1972.
Tesis.
Gaya Turabian
Marshall, Alfred.
Principles of economics.
text
London:
Macmillan,
1972.
Tesis.