Cita APA (7a ed.)

Heilbroner, R. L., & Galbraith, J. K. (1990). The economic problem (9th ed.). Prentice Hall.

Cita Chicago Style (17a ed.)

Heilbroner, Robert L., y James K. Galbraith. The Economic Problem. 9th ed. Englewood Cliffs, New Jersey: Prentice Hall, 1990.

Cita MLA (9a ed.)

Heilbroner, Robert L., y James K. Galbraith. The Economic Problem. 9th ed. Prentice Hall, 1990.