Cita APA (7a ed.)

Keller, M., & Melnick, R. S. (1999). Taking stock: American government in the twentieth century. Woodrow Wilson Center Press [etc.].

Cita Chicago Style (17a ed.)

Keller, Morton, y R. Shep Melnick. Taking Stock: American Government in the Twentieth Century. Washington [etc.]: Woodrow Wilson Center Press [etc.], 1999.

Cita MLA (9a ed.)

Keller, Morton, y R. Shep Melnick. Taking Stock: American Government in the Twentieth Century. Woodrow Wilson Center Press [etc.], 1999.