Gaya APA
Slavin, Stephen L.. (1991).
Introduction to economics (2nd ed.).
Boston:
Irwin.
Gaya Chicago
Slavin, Stephen L..
Introduction to economics.
2nd ed.
Boston:
Irwin,
1991.
Text.
Gaya MLA
Slavin, Stephen L..
Introduction to economics.
2nd ed.
Boston:
Irwin,
1991.
Text.
Gaya Turabian
Slavin, Stephen L..
Introduction to economics.
2nd ed.
Boston:
Irwin,
1991.
Print.