Gaya APA
A., P., J., Carl, P. (1977).
Elements of economics / James A. Phillips, Carl Pearl (Ed.ke-2).
New York:
Macmillan Publishing.
Gaya MLA
Phillips, James, A.., Pearl, Carl.
"Elements of economics / James A. Phillips, Carl Pearl".
Ed.ke-2
New York:
Macmillan Publishing,
1977.
Textbook.