Gaya APA
Truett, L, J., Truett, D, B.
(1987).
Microeconomics
.
St. Louis:
Mosby College Publishing.
Gaya MLA
Truett, Lila, J.., Truett, Dale, B..
"Microeconomics".
St. Louis:
Mosby College Publishing,
1987.
Teksbook.