BUSCADOR DE RECURSOS UNSAM

Cita APA (7a ed.)

Ruffin, R., & Gregory, P. R. (1986). Principles of economics (2nd ed.). Scott, Foresman.

Cita Chicago Style (17a ed.)

Ruffin, Roy, e Paul R. Gregory. Principles of Economics. 2nd ed. Glenview: Scott, Foresman, 1986.

Cita MLA (8a ed.)

Ruffin, Roy, e Paul R. Gregory. Principles of Economics. 2nd ed. Scott, Foresman, 1986.