P., F., J., A., T., A.(1993).Economics of the firm : theory and practice / Arthur A. Thompson, John P. Formby (Ed.ke-6).New Jersey:Prentice Hall.
Gaya MLA
Formby, John, P.., Thompson, Arthur, A.."Economics of the firm : theory and practice / Arthur A. Thompson, John P. Formby".Ed.ke-6New Jersey:Prentice Hall,1993.Textbook.