Cita APA (7a ed.)

Aiken, W., & LaFollette, H. (1977). World hunger and moral obligation. Prentice-Hall.

Cita Chicago Style (17a ed.)

Aiken, William, y Hugh LaFollette. World Hunger and Moral Obligation. Englewood Cliffs, New Jersey: Prentice-Hall, 1977.

Cita MLA (9a ed.)

Aiken, William, y Hugh LaFollette. World Hunger and Moral Obligation. Prentice-Hall, 1977.