Cita APA (7th ed.)

Frolich, N., & Oppenheimer, J. A. (1978). Modern political economy. Prentice-Hall.

Cita Chicago (17th ed.)

Frolich, Norman, i Joe A. Oppenheimer. Modern Political Economy. Englewood Cliffs, N.J: Prentice-Hall, 1978.

Cita MLA (9th ed.)

Frolich, Norman, i Joe A. Oppenheimer. Modern Political Economy. Prentice-Hall, 1978.